During opening and closing operations of a fluid control valve (2), the port pressure in the fluid control valve (2) is guided to a main relief valve (6) via a first passage (101) and the maximum pressure thereof is controlled by the main relief valve (6). In addition, the port pressure in the fluid control valve (2) is simultaneously guided to pressure compensation valves (21), (31), (41) of fluid control valves (2), (3), (4). Thus, even in the case when functions with different load pressures are simultaneously operated in the fluid control valves (2), (3), (4), it is possible always to guarantee constant operability regardless of the pressure load. In addition, during opening and closing operations of the fluid control valve (3) that drives a tilt cylinder (30) for a function to tilt a fork, the port pressure of the fluid control valve (3) is guided to a secondary relief valve (7) via a second passage (102), is guided to the main relief valve (6) via the first passage (101), and is guided to the pressure compensation valves (21), (31), (41) of the fluid control valves (2), (3), (4).