The invention discloses a hydraulic clutch control system, and belongs to the field of hydraulic control. When a clutch is required to be converted to a closed state from a separating state, a first overflow valve works, and oil liquid entering an oil inlet point cannot push a piston rod of an oil cylinder. A first electromagnetic ball valve is controlled to lose power, the first electromagnetic ball valve is closed, the first overflow valve does not work, a second overflow valve works, and the oil liquid entering the oil inlet point pushes a piston rod to extend out and cannot completely pushout the piston rod of the oil cylinder, so that the clutch is in a semi-closed state. A second electromagnetic ball valve is controlled to lose power, the second overflow valve does not work, a thirdoverflow valve works, the oil liquid entering the oil inlet point completely pushes the piston rod out of the oil cylinder, and complete enclosure of the clutch is realized. According to the hydraulic clutch control system, the clutch does not be closed completely at once, firstly enters into the semi-closed state, then enters into the complete enclosure state, buffer exists when the clutch is closed, and impact, work noises and abrasion of friction plates generated in the work process of the clutch are less.