An improved nozzle for inflatable objects including a nozzle seat, a first annular wall extending from which, a relatively thin ring portion on the first annular wall to serve as a bending position, a conical body defining an air inlet located on the ring portion, an one-way membrane beneath the air inlet, a tab and a plug arm carrying a plug and having a protuberance at an end for inserting to the air inlet to push away the one-way membrane for deflation purpose.