diff --git a/projects/ui/src/lib/components/po-table/po-table-base.component.spec.ts b/projects/ui/src/lib/components/po-table/po-table-base.component.spec.ts
index f16f7d472d..a10c1e600f 100644
--- a/projects/ui/src/lib/components/po-table/po-table-base.component.spec.ts
+++ b/projects/ui/src/lib/components/po-table/po-table-base.component.spec.ts
@@ -759,6 +759,46 @@ describe('PoTableBaseComponent:', () => {
       expect(component['emitSelectEvents']).toHaveBeenCalledWith(row);
     });
 
+    it('selectRow: should update child items $selected property if row has detail', () => {
+      const childItems = [
+        { id: 2, $selected: false },
+        { id: 3, $selected: false }
+      ];
+      const row = { id: 1, $selected: false, detail: childItems };
+
+      component.selectRow(row);
+
+      expect(row.$selected).toBeTruthy();
+      row.detail.forEach(childItem => {
+        expect(childItem.$selected).toBeTruthy();
+      });
+    });
+
+    it('selectRow: should call setSelectedList after selecting a row', () => {
+      const row = { id: 1, $selected: false };
+
+      spyOn(component, 'setSelectedList');
+
+      component.selectRow(row);
+
+      expect(component.setSelectedList).toHaveBeenCalled();
+    });
+
+    it('selectRow: should update child items $selected property if row has detail and $selected is false', () => {
+      const childItems = [
+        { id: 2, $selected: true },
+        { id: 3, $selected: true }
+      ];
+      const row = { id: 1, $selected: true, detail: childItems };
+
+      component.selectRow(row);
+
+      expect(row.$selected).toBeFalsy();
+      row.detail.forEach(childItem => {
+        expect(childItem.$selected).toBeFalsy();
+      });
+    });
+
     it('emitSelectEvents: should emit `selected` if `row.$selected` is `true`', () => {
       const row = { id: 1, $selected: true };
       spyOn(component.selected, 'emit');
@@ -787,6 +827,80 @@ describe('PoTableBaseComponent:', () => {
       expect(component['emitSelectAllEvents']).toHaveBeenCalled();
     });
 
+    describe('selectAllRows:', () => {
+      beforeEach(() => {
+        component.hideSelectAll = false;
+        component.selectAll = false;
+        component.items = [
+          { id: 1, $selected: false, detail: [{ id: 4, $selected: false }] },
+          { id: 2, $selected: false, detail: [{ id: 5, $selected: false }] }
+        ];
+      });
+
+      it('should call emitSelectEvents and updateParentRowSelection', () => {
+        const row = { id: 1, $selected: false, detail: [{ id: 4 }] };
+        const parentRow = { id: 2, detail: [row] };
+
+        spyOn(component, <any>'emitSelectEvents');
+        spyOn(component, <any>'updateParentRowSelection');
+
+        component.selectDetailRow({ item: row, parentRow });
+
+        expect(component['emitSelectEvents']).toHaveBeenCalledWith(row);
+        expect(component['updateParentRowSelection']).toHaveBeenCalledWith(parentRow);
+      });
+
+      it('should select all rows when selectAll is false', () => {
+        component.selectAllRows();
+
+        expect(component.selectAll).toBeTrue();
+        component.items.forEach(item => {
+          expect(item.$selected).toBeTrue();
+          item.detail.forEach(childItem => {
+            expect(childItem.$selected).toBeTrue();
+          });
+        });
+      });
+
+      it('should unselect all rows when selectAll is true', () => {
+        component.selectAll = true;
+        component.items.forEach(item => {
+          item.$selected = true;
+          item.detail.forEach(childItem => (childItem.$selected = true));
+        });
+
+        component.selectAllRows();
+
+        expect(component.selectAll).toBeFalse();
+        component.items.forEach(item => {
+          expect(item.$selected).toBeFalse();
+          item.detail.forEach(childItem => {
+            expect(childItem.$selected).toBeFalse();
+          });
+        });
+      });
+
+      it('should not select all rows if hideSelectAll is true', () => {
+        component.hideSelectAll = true;
+
+        component.selectAllRows();
+
+        component.items.forEach(item => {
+          expect(item.$selected).toBeFalse();
+        });
+      });
+
+      it('should emit selectAll events and update selected list', () => {
+        spyOn(component as any, 'emitSelectAllEvents');
+        spyOn(component, 'setSelectedList');
+
+        component.selectAllRows();
+
+        expect((component as any).emitSelectAllEvents).toHaveBeenCalledWith(true, jasmine.any(Array));
+        expect(component.setSelectedList).toHaveBeenCalled();
+      });
+    });
+
     it('emitSelectAllEvents: should emit `allSelected` if `selectAll` is `true`', () => {
       const rows = [{ id: 1, $selected: true }];
       const selectAll = true;
@@ -809,14 +923,34 @@ describe('PoTableBaseComponent:', () => {
       expect(component.allUnselected.emit).toHaveBeenCalledWith(rows);
     });
 
-    it('selectDetailRow: should call `emitSelectEvents`', () => {
-      const row = { id: 1, $selected: false };
+    it('updateParentRowSelection: should set parentRow.$selected to true if all child items are selected', () => {
+      const parentRow: any = {
+        detail: [{ $selected: true }, { $selected: true }, { $selected: true }]
+      };
 
-      spyOn(component, <any>'emitSelectEvents');
+      component.updateParentRowSelection(parentRow);
 
-      component.selectDetailRow(row);
+      expect(parentRow.$selected).toBe(true);
+    });
 
-      expect(component['emitSelectEvents']).toHaveBeenCalledWith(row);
+    it('updateParentRowSelection: should set parentRow.$selected to false if all child items are not selected', () => {
+      const parentRow: any = {
+        detail: [{ $selected: false }, { $selected: false }, { $selected: false }]
+      };
+
+      component.updateParentRowSelection(parentRow);
+
+      expect(parentRow.$selected).toBe(false);
+    });
+
+    it('updateParentRowSelection: should set parentRow.$selected to null if some child items are selected and some are not', () => {
+      const parentRow: any = {
+        detail: [{ $selected: true }, { $selected: false }, { $selected: true }]
+      };
+
+      component.updateParentRowSelection(parentRow);
+
+      expect(parentRow.$selected).toBeNull();
     });
 
     describe('getColumnColor:', () => {
diff --git a/projects/ui/src/lib/components/po-table/po-table-base.component.ts b/projects/ui/src/lib/components/po-table/po-table-base.component.ts
index 0671e2daa5..10aafafb7d 100644
--- a/projects/ui/src/lib/components/po-table/po-table-base.component.ts
+++ b/projects/ui/src/lib/components/po-table/po-table-base.component.ts
@@ -1024,6 +1024,11 @@ export abstract class PoTableBaseComponent implements OnChanges, OnDestroy {
 
       this.items.forEach(item => {
         item.$selected = this.selectAll;
+
+        if (item[this.nameColumnDetail]) {
+          const childItems = item[this.nameColumnDetail];
+          childItems.forEach(childItem => (childItem.$selected = this.selectAll));
+        }
       });
 
       this.emitSelectAllEvents(this.selectAll, [...this.items]);
@@ -1035,8 +1040,13 @@ export abstract class PoTableBaseComponent implements OnChanges, OnDestroy {
     row.$selected = !row.$selected;
 
     this.emitSelectEvents(row);
-
     this.configAfterSelectRow(this.items, row);
+
+    if (row[this.nameColumnDetail] && (row.$selected === true || row.$selected === false)) {
+      const childItems = row[this.nameColumnDetail];
+      childItems.forEach(item => (item.$selected = row.$selected));
+    }
+
     this.setSelectedList();
   }
 
@@ -1044,8 +1054,29 @@ export abstract class PoTableBaseComponent implements OnChanges, OnDestroy {
     return this.selectable && this.selectableEntireLine;
   }
 
-  selectDetailRow(row: any) {
-    this.emitSelectEvents(row);
+  selectDetailRow(event: any) {
+    const { item, parentRow } = event;
+    this.emitSelectEvents(item);
+    this.updateParentRowSelection(parentRow);
+  }
+
+  updateParentRowSelection(parentRow: any) {
+    const old = parentRow.$selected || null;
+    const childItems = parentRow[this.nameColumnDetail];
+
+    if (childItems.every(item => item.$selected)) {
+      parentRow.$selected = true;
+    } else if (childItems.every(item => !item.$selected)) {
+      parentRow.$selected = false;
+    } else {
+      parentRow.$selected = null;
+    }
+    if (old != parentRow.$selected && !(old == null && parentRow.$selected === false)) {
+      this.emitSelectEvents(parentRow);
+    }
+
+    this.configAfterSelectRow(this.items, parentRow);
+    this.setSelectedList();
   }
 
   setSelectedList() {
diff --git a/projects/ui/src/lib/components/po-table/po-table-detail/po-table-detail.component.html b/projects/ui/src/lib/components/po-table/po-table-detail/po-table-detail.component.html
index 367a10d86c..15eda74d60 100644
--- a/projects/ui/src/lib/components/po-table/po-table-detail/po-table-detail.component.html
+++ b/projects/ui/src/lib/components/po-table/po-table-detail/po-table-detail.component.html
@@ -22,12 +22,7 @@
       <ng-container *ngIf="isSelectable; else masterDetailSpace">
         <td class="po-table-column-master-detail-space-checkbox"></td>
         <td class="po-table-column po-table-column-selectable">
-          <po-checkbox
-            name="checkbox"
-            (click)="onSelectRow(item)"
-            (p-change)="onSelectRow(item)"
-            [(ngModel)]="item.$selected"
-          ></po-checkbox>
+          <po-checkbox name="checkbox" (p-change)="onSelectRow(item)" [p-checkboxValue]="item.$selected"></po-checkbox>
         </td>
       </ng-container>
 
diff --git a/projects/ui/src/lib/components/po-table/po-table-detail/po-table-detail.component.spec.ts b/projects/ui/src/lib/components/po-table/po-table-detail/po-table-detail.component.spec.ts
index f5752def56..488258532c 100644
--- a/projects/ui/src/lib/components/po-table/po-table-detail/po-table-detail.component.spec.ts
+++ b/projects/ui/src/lib/components/po-table/po-table-detail/po-table-detail.component.spec.ts
@@ -178,7 +178,7 @@ describe('PoTableDetailComponent', () => {
       component.onSelectRow(row);
 
       expect(row.$selected).toBeTruthy();
-      expect(component.selectRow.emit).toHaveBeenCalledWith(row);
+      expect(component.selectRow.emit).toHaveBeenCalledWith({ item: row, parentRow: undefined });
     });
 
     describe('returnPoTableDetailObject: ', () => {
diff --git a/projects/ui/src/lib/components/po-table/po-table-detail/po-table-detail.component.ts b/projects/ui/src/lib/components/po-table/po-table-detail/po-table-detail.component.ts
index c4f350959a..53e17dd8fb 100644
--- a/projects/ui/src/lib/components/po-table/po-table-detail/po-table-detail.component.ts
+++ b/projects/ui/src/lib/components/po-table/po-table-detail/po-table-detail.component.ts
@@ -23,6 +23,12 @@ export class PoTableDetailComponent {
    */
   @Input('p-items') items: Array<any>;
 
+  /**
+   * Linha do registro pai correspondente ao item de detalhe selecionado. Utilizado para gerenciar o estado de seleção do elemento pai,
+   * permitindo que o mesmo seja atualizado para refletir a seleção de todos os filhos ou estado indeterminado.
+   */
+  @Input('p-parent-row') parentRow: PoTableDetail;
+
   /**
    * Define se a tabela possui a opção de `selectable` habilitada.
    */
@@ -92,7 +98,7 @@ export class PoTableDetailComponent {
 
   onSelectRow(item) {
     item.$selected = !item.$selected;
-    this.selectRow.emit(item);
+    this.selectRow.emit({ item: item, parentRow: this.parentRow });
   }
 
   private returnPoTableDetailObject(value: any) {
diff --git a/projects/ui/src/lib/components/po-table/po-table.component.html b/projects/ui/src/lib/components/po-table/po-table.component.html
index b6d1dbbff4..c7fe1d2689 100644
--- a/projects/ui/src/lib/components/po-table/po-table.component.html
+++ b/projects/ui/src/lib/components/po-table/po-table.component.html
@@ -434,6 +434,7 @@
               [p-selectable]="selectable && !detailHideSelect"
               [p-detail]="columnMasterDetail.detail"
               [p-items]="row[nameColumnDetail]"
+              [p-parent-row]="row"
               (p-select-row)="selectDetailRow($event)"
             >
             </po-table-detail>
@@ -790,6 +791,7 @@
                 [p-selectable]="selectable && !detailHideSelect"
                 [p-detail]="columnMasterDetail.detail"
                 [p-items]="row[nameColumnDetail]"
+                [p-parent-row]="row"
                 (p-select-row)="selectDetailRow($event)"
               >
               </po-table-detail>
@@ -820,7 +822,7 @@
   <po-checkbox
     name="checkbox"
     (p-change)="selectable ? selectRow(row) : 'javascript:;'"
-    [p-checkboxValue]="row.$selected"
+    [p-checkboxValue]="row.$selected === null ? 'mixed' : row.$selected"
   ></po-checkbox>
 </ng-template>