To provide a hydraulic pressure controller capable of miniaturizing an arrangement space of a load pressure detection circuit and miniaturizing a housing incorporating the load pressure detection circuit by preventing a configuration of the load pressure detection circuit from becoming complicated.

A supply flow passage 32, a discharge flow passage 33, an actuator flow passage 34, and a spool hole 36 in which a spool 35 is arranged and which communicates with each of these flow passages are formed in the housing 31. The load pressure detection circuit 21 is provided by corresponding to each change-over position (13b, 13c) and detects load pressure in accordance with communication of the actuator flow passage 34 with the supply flow passage 32. The load pressure detection circuit 21 is formed in the housing 31 as holes 21a, 21b passing through the spool hole 36. A check valve 22 is provided in each load pressure detection circuit 21.