The invention belongs to the technical field of mechanical equipment, and particularly relates to a chassis mounting structure for an industrial robot. The chassis mounting structure comprises a baseassembly and a connecting assembly arranged on the base assembly. The base assembly comprises a base, a supporting cylinder and supporting blocks, the supporting cylinder is integrally arranged at thetop of the base, the supporting blocks are uniformly arranged along the periphery of the supporting cylinder, and every two adjacent supporting blocks, the base and the supporting cylinder form a mounting groove, and the side wall, corresponding to each mounting groove, of the supporting cylinder is provided with an air inlet. Torque transmission of the output end of a motor is facilitated, a positioning support effect is achieved, the dynamic performance of a shaft system is effectively improved, the pressure of the output end of the motor is reduced, the stable operation of an actuating mechanism is facilitated, the service life of the shaft system can be prolonged, the circulation speed of air around the motor can be accelerated, the heat dissipation effect of the chassis mounting structure is improved, the dustproof effect is achieved while heat dissipation is facilitated, and stable operation of the machine body is guaranteed.