The utility model discloses a compressor's structure of breathing in, including the bellows and the silencer of breathing in, bellows joint inclusive AND on the silencer of breathing in silencer line contact of breathing in, the silencer of breathing in is including the pipeline no. 1 of breathing in, expansion chamber, the pipeline no. 2 of breathing in, breathe in pipeline no. 3 and resonant cavity, breathe in pipeline no. 1, expansion chamber and two series connections of pipeline of breathing in together, the pipeline no. 3 of breathing in is connected with the resonant cavity, constitute the resonant cavity subassembly, breathe in pipeline no. 3 the other end with breathe in pipeline no. 1 or the pipeline two-phase of breathing in even, the prime resonance frequency of resonant cavity subassembly is between 80-210Hz, first, the second rank resonance frequency of the structure of breathing in that silencer and the bellows of breathing in is linked to be mutually is respectively between 45-160Hz. The utility model discloses possess the cushioning effect of making an uproar is fallen and in, possessed the stable pressure boost effect of breathing in, can promote compressor refrigeration performance by a wide margin to can be reliably, realize on concrete technology steadily.