The invention relates to a circulating flow state type self-recycling dust-free pulverizer. The circulating flow state type self-recycling dust-free pulverizer comprises a pulverizer shell and a recycling air channel; the pulverizer shell internally comprises a pulverizing cavity and an air blowing cavity, and the pulverizing cavity communicates with the air blowing cavity through a filter screen A; the top of the pulverizing cavity is provided with a feeding inlet, a sealing cover is arranged on the feeding inlet, and a filter screen B is arranged between the feeding inlet and the sealing cover; the air blowing cavity comprises a turbofan for blowing air towards the pulverizing cavity, an air outlet of the recycling air channel is located at the bottom of the air blowing cavity, and an air inlet of the recycling air channel is located in the position, corresponding to the middle of the sealing cover, of the top of the pulverizing cavity; a recycling basket is arranged in the recycling air channel; the turbofan comprises a driving shaft arranged at the bottom of the air blowing cavity; and the pulverizing cavity is internally provided with a filter screen C, a reverse impeller is arranged between the filter screen C and the filter screen A and fixedly connected with the driving shaft, and an auxiliary feeding inlet is formed in the inner wall, corresponding to the position between the filter screen C and the filter screen B, of the pulverizing cavity.