Three plus one 4-function handheld showerhead, with a spray gun and handheld showerhead superimposed on each other, is both a handheld showerhead and a bathroom cleaning spray gun. The two-in-one design reduces development waste and production costs, and improves product competitiveness. Single-handed operation, one-touch direct access to the spray gun function, press and go, release to reset, easy for the elderly and children to use to avoid misoperation.