The present invention discloses a comprehensive power-distribution starting control cabinet. The cabinet comprises a body shell. The front side of the body shell is rotatably connected with a movabledoor, one side of the movable door is fixedly connected with a lock, and the back side of the body shell is fixedly connected with a heat dissipation box. The heat dissipation box comprises a shell body, one side of the shell body is provided with a blower, one side of the blower is fixedly connected with a cold air duct, and the inner wall of the cold air duct is fixedly connected with rock wools. According to the cabinet, by providing the blower, a semiconductor cooler, heat-dissipation fin(s), an wind-uniformity plate, heat dissipation plate(s), longitudinal heat-dissipation hole(s), lateral heat-dissipation holes, spherical heat-dissipation buffer holes, flexible sleeve rods, springs, a support plate, an elastic plate and a torsion spring, the problems that circuit board(s) can producea large amount of heat after long working hours, the conventional power-distribution starting control cabinet has a poor heat-dissipation effect, the heat is hard to be dissipated, and the reactor(s)QKSQ in the power-distribution starting control cabinet can produce weak vibration to shorten the life of the reactor(s) QKSQ when the reactor(s) QKSQ are at work, are solved.