A press touch pop-up stopper is used in a basin and contains a pipe set fixed in an opening of a bottom end of the basin and including a hole disposed therein and having an outlet fixed on a top end of the hole; a stopper assembly received in the pipe set and including a plug, after the plug is pressed, it bounces automatically to turn on the outlet so as to flow water, after the plug is pressed again, it closing the outlet to stop flowing the water; a vertical connecting structure defined between the pipe set and the stopper assembly so that when the stopper assembly is pulled upward, it disengages from the pipe set, and when the stopper assembly is pressed downward to be received in the pipe set, it is connected with the pipe set.