<p>A control device for multiple hydraulic actuators which is capable of rapidly increasing a discharge pressure of a variable pump (1) to prevent a decrease in discharge quantity of the variable pump even when one of the actuators is required to be fed with hydraulic fluid in a micro-amount under a low pressure. An operating valve (42) of a spin motor (39) is connected on a downstream side thereof through a converging passage (44) to a feed side of a boom cylinder (37) and the converging passage is provided with a change-over valve (67) which is changed over to an open position when an operating valve (40) for operating the above-described boom cylinder is changed over.</p>
