Compressor and refrigeration equipment

The invention discloses a compressor and refrigeration equipment, the compressor has an air suction working state and an air exhaust working state, the compressor comprises a cylinder body, a piston, a variable cylinder plug and a driving rod, the piston is slidably arranged in the cylinder body, and a compression cavity is formed between the piston and the cylinder body; a sliding through hole is formed in the piston in the sliding direction of the piston; the variable cylinder plug is arranged in the sliding through hole in a sliding manner; the driving rod is hinged to the piston, the variable cylinder plug abuts against the driving rod, and the driving rod is suitable for driving the piston and the variable cylinder plug to slide; when the compressor operates in the exhaust working state, the variable cylinder plug slides in the sliding through hole in the direction towards the compression cavity, and/or when the compressor operates in the air suction working state, the variable cylinder plug slides in th