The invention provides a pump body structure and a compressor provided with the same. A pump body assembly comprises a crankshaft, and the crankshaft is provided with an eccentric part. A rolling piston is arranged on the outer peripheral face of the eccentric part in a sleeving mode. A connection assembly comprises a first connection piece and a second connection piece, the first connection pieceis arranged on the outer peripheral face of the eccentric part, the second connection piece is arranged on the inner wall face of the rolling piston, the first connection piece is matched with the second connection piece, and the crankshaft drives the rolling piston to rotate through the connection assembly. Through the arrangement, it is ensured that the outer periphery of the eccentric part isin direct contact with the rolling piston to achieve sealing, the purpose of mass reduction of the eccentric part is achieved at the same time, and accordingly the radial vibration of a pump body of the compressor, friction power consumption and noises are reduced. The utilization reliability of the compressor is improved.