The invention discloses an air suction structure of a refrigeration compressor. The air suction structure of the refrigeration compressor comprises a corrugated pipe and an air suction silencer, wherein the corrugated pipe is connected onto the air suction silencer or is in line contact with the air suction silencer, the air suction silencer comprises an air suction pipeline I, an expanding cavity, an air suction pipeline II, an air suction pipeline III and a resonant cavity, the air suction pipeline I, the expanding cavity and the air suction pipeline II are serially connected together, the air suction pipeline III is connected with the resonant cavity to form a resonant cavity assembly, the other end of the air suction pipeline III is connected with the air suction pipeline I or the air suction pipeline II, the first-order resonant frequency of the resonant cavity assembly is 80-210Hz, and the first-order and second-order resonant frequency of the air suction structure formed by the air suction silencer and the corrugated pipe through connection is respectively 45-160Hz. The air suction structure of the refrigeration compressor has effects of noise reduction and vibration absorption, simultaneously has a stable air suction pressurizing effect, can greatly improve the refrigeration performance of the refrigeration compressor, and can be reliably and stably realized in specific processes.