PURPOSE: To provide a proportional solenoid type flow rate control valve which has a structure so as to control a flow rate without being influenced by a load pressure, even in case that a pressure compensator is not provided in addition.

CONSTITUTION: A proportional solenoid type flow rate control valve has a fixed throttle 8 which is arranged in an outlet passage 61 for communicating a large-diameter blind hole 72 with an outlet port 6, and a pilot passage 11 which communicates the outlet passage 61 between the fixed throttle 8 and the outlet port 6 with a pilot oil chamber 13 functioning onto a rod side end face 34 of a land 32 of a spool 3.