Description of Technical Content: A circuit control box for self-priming pump is characterized by a box body and a cover body, in which a "L" type circuit groove and a tank groove are arranged. The tank groove and the "L" type circuit groove together form a rectangular accommodation space, and the "L" type circuit groove is covered with a cover body.“ The "L" type circuit groove comprises a vertical groove and a transverse groove, the control circuit board is arranged in the transverse groove, and the wiring column is arranged in the vertical groove; a pressure tank is placed in the tank groove, and the pressure tank is connected with a flange joint, the flange joint is at the bottom of the box body, and the flange joint is connected with a hose. A connecting plate is arranged at one end of the vertical groove on the box body, and a control panel is arranged on the connecting plate; there is a through hole between the connecting plate and the vertical groove, and the wiring of the control panel is arranged through the vertical groove and the wire is connected with the wiring column; the cover body is covered on the box body, and the side of the cover body matches and the connecting plate.