The invention discloses a crankshaft loading device of a compressor crankshaft and silencing cover assembler. The crankshaft loading device of the compressor crankshaft and silencing cover assembler comprises a push-pull cylinder installation bracket mounted on the ground; a push-pull cylinder installation plate is mounted on the push-pull cylinder installation bracket; a push-pull cylinder mounting base perpendicular to the push-pull cylinder installation plate is mounted on the upper plane of the push-pull cylinder installation plate through reinforcing ribs; a push-pull cylinder is mounted on the side surface of the push-pull cylinder mounting base through a cylinder plug shaft base; a cylinder connecting head is mounted on a piston rod of the push-pull cylinder; and two first linear guide rails are mounted in positions, on one side of the push-pull cylinder mounting base, of the push-pull cylinder installation plate in parallel. Through the mode, the crankshaft loading device of the compressor crankshaft and silencing cover assembler can replace manual crankshaft loading, reduces the production cost, and improves the production efficiency.