A lever type switch valve has a switch chamber with three sections in the axial direction including, two outlet cavities at two ends and an inlet cavity in the central section. The outer end of each outlet cavity in the axial direction has a slide section; an inner protruding ring is disposed between two ends of the inlet cavity and the outlet cavities; a spindle of dumbbell shape, the spindle is slidably coupled to the inner side of the switch chamber axially; the spindle has three sections in the axial direction that are two pistons at two ends and a flowing section in the central section; the piston has a big outer end and a small inner end. The outer ends of the pistons are slidably coupled to the slide section in sealing way, the axial length of the outlet cavity is larger than the axial direction of the piston.