To provide a connecting rod device of a hermetic reciprocating compressor with the structure thereof improved so that any misalignment of a crankshaft and a piston can be compensated.

This connecting rod device of the hermetic reciprocating compressor which connects an eccentric part of the crankshaft to the piston to convert the rotational motion into the reciprocating sliding motion comprises a bush rotatably coupled with an eccentric part and provided with an inclined surface having the predetermined inclination to the axis of the eccentric part, a connecting rod in which as small inside diameter coupled with a piston pin connected to the piston is formed on one end, and a coupling part to be coupled with the bush in the axial direction along the inclined surface of the bush is provided on the other end, and a tightening member to tighten the coupling part with the bush so as to enable the relative movement of the coupling part with the bush.