The invention discloses a control system for a variable pump, which comprises a variable pump control mechanism (1). The oil outlet pipeline (11) of the variable pump control mechanism is communicated with the pressure control port (21A) of a discharge capacity control device (21) of the variable pump (2). The control system of the variable pump also comprises a pressure limiting branch (3) connected beside the oil outlet pipeline, and moreover, when the pressure in an oil supply pipeline (22) of the variable pump is not less than a preset value, the pressure limiting branch is switched on; and when the pressure in the oil supply pipeline (22) of the variable pump is less than the preset value, the pressure limiting branch is switched off. The invention also discloses a hydraulic walking arrangement, which comprises a walking motor (5) and the variable pump (2) which is used for driving the walking motor (5), wherein the variable pump is controlled through the control system for the variable pump. The variable pump control mechanism in the control system for the variable pump is easy to operate, for example, when the control system for the variable pump is used for driving the hydraulic walking arrangement, the phenomenon that an engine is damaged and a traffic accident is caused because of the misoperation of a driver is not easy to happen.