Shampoo chair having seat

The present invention relates to a shampoo chair having a seat wherein when a back of the chair is pushed backwards, a leg support is concurrently lifted up in conjunction with the back of the chair such that a customer washing his or her hair can receive a shampoo service in a more comfortable way. The present invention comprises: an "n"-shaped first leg frame (102); an "n"-shaped second leg frame (104) which is spaced from the "n"-shaped first leg frame (102) at a certain interval; a fixing bar (106) which is installed between one rear side of the "n"-shaped first leg frame (102) and one rear side of the "n"-shaped second leg frame (104); a first protrusion (108) which is provided on one front side of the "n"-shaped first leg frame (102); a second protrusion (110) which is provided on one front side of the "n"-shaped second leg frame (104); a first horizontal plate (112) which is provided on one upper side of the "n"-shaped first leg frame (102); a second horizontal plate (113) which is provided on one upper side of the "n"-shaped second leg frame (104); a first lateral plate (114) which is vertically extended from an end of the first horizontal plate (112), and which is provided on an end of the first protrusion (108); and a second lateral plate (116) which is vertically extended from an end of the second horizontal plate (113), and which is provided on an end of the second protrusion (110); or the like.