The utility model provides a simple toothbrush, toothbrush handle (2) that have one toothbrush head (1) and be connected with toothbrush head (1), toothbrush handle (2) left end is the external screw thread, close with thread to match in toothbrush head (1) the right -hand member, the inner chamber of toothbrush head (1) is by first toothpaste filling hole (10), constitute with the second toothpaste filling hole (11) of first toothpaste filling hole (10) intercommunication, toothbrush handle (2) inside be toothpaste memory tube (8), the tip of rack (3) is a piston, the piston of rack (3) and tip is installed in toothpaste memory tube (8), the rack and pinion toothpaste push mechanism that rack (3) and gear shaft (4) constitute, toothpaste push mechanism installation room (7) are seted up in toothbrush handle (2), it sets up 6 at least play cream holes (12) to be located the pieces root at the left end of toothbrush head (1), toothbrush handle (2) upper right side -mounting has installation shell (5), install on installation shell (5) gear shaft (4).