def copy_table_from_excel_to_word():
    import time
    from win32com import client

    excel = client.Dispatch('Excel.Application')
    word = client.Dispatch('Word.Application')

    doc = word.Documents.Open('C:\\Users\\Administrator\\Desktop\\test.docx')
    wb = excel.Workbooks.Open('C:\\Users\\Administrator\\Desktop\\tav.xlsx')
    sheet = wb.Worksheets(1)

    tn = sheet.Cells(2, 1).value
    start_row = 2
    end_row = 2
    # 循環 把Excel第一列值一樣的選中復制到word中
    while True:
        if sheet.Cells(start_row, 1).value = '':
            print('finish')
            break
        if sheet.Cells(end_row + 1, 1).value == tn:
            end_row += 1
        else:
            print(tn)
            word.Selection.InsertAfter('\n%s\n' % tn)
            word.Selection.InsertAfter('%s\n' % sheet.Cells(start_row, 2).value)
            time.sleep(0.3)
            _ = word.Selection.MoveRight()
            time.sleep(0.3)
            _ = sheet.Range('C1:H1').Copy()
            word.Selection.PasteExcelTable(False, True, False)
            time.sleep(0.3)
            _ = sheet.Range('C%d:H%d' % (start_row, end_row)).Copy()
            word.Selection.PasteExcelTable(False, True, False)
            time.sleep(0.3)
            
            start_row = end_row + 1
            end_row += 1
            tn = sheet.Cells(start_row, 1).value

    doc.Close()
    wb.Close()
            
          

com對象的各種屬性和方法參考：

https://docs.microsoft.com/zh-CN/office/vba/api/word.paragraphformat