The invention discloses a distributing valve for a concrete pump, the concrete pump, a control method thereof and a concrete pump truck. The distributing valve for the concrete pump comprises a valve body and a wear-resisting plate. The valve body comprises a first suction pipe and a first pumping pipe, wherein the back end of the first suction pipe is communicated with an outlet of a hopper so as to communicate the hopper and a delivery cylinder, and the back end of the first pumping pipe is rotatably connected with a delivery pipe of the concrete pump so as to communicate the delivery cylinder and the delivery pipe. The valve body can be switched between a first state and a second state under the driving of a drive mechanism, in the first state, concrete slurry is sucked into the delivery cylinder through the first suction pipe, and in the second state, the delivery cylinder pumps over the concrete slurry through the first pumping pipe. Because of the distributing valve with the structure, the concrete pump can thoroughly employ the self-flowing capacity of the concrete slurry in order to increase the suction performance of the concrete pump. The distributing valve has higher pressure bearing capacity, and the concrete pump can ensure that the concrete slurry has higher pressure through the delivery cylinder, thereby meeting the needs of high-pressure pumps to pump over the concrete slurry.