Flow regulation method and flow control system for multi-cylinder pump

The invention discloses a flow regulation method and a flow control system for a multi-cylinder pump. The flow regulation method comprises the steps of stable regulation of the stable working stage of the multi-cylinder pump; according to stable regulation, when draining is conducted by a second part cylinder, liquid suction is conducted by a first part cylinder to a first preset pressure value, and when liquid draining of the second part cylinder is finished, liquid draining is conducted by the first part cylinder; and when liquid draining is conducted by the first part cylinder, liquid suction is conducted by the second part cylinder to a second preset pressure value, and when liquid draining of the first part cylinder is finished, liquid draining is conducted by the second part cylinder. Through comparison with the preset pressure values, and according to the working mode of one part cylinder relative to the other part cylinder, the first part cylinder and the second part cylinder are made to be matched co