Dry ice cleaning machine

The utility model discloses a dry ice cleaning machine which comprises a machine frame, wherein a charging barrel used for placing dry ice is arranged on the machine frame; a discharge opening is formed in the lower end of the charging barrel; the discharge opening is connected with one end of a hose; the other end of the hose is connected with the inlet of an ice distribution machine which is driven by a motor; a first interface of the outlet of the ice distribution machine is connected with an air inlet pipe; a second interface of the outlet of the ice distribution machine is connected with one end of an air outlet pipe; the other end of the air outlet pipe is connected with a spray pipe; a feeding opening of the charging barrel is sealed when being closed. By adopting the scheme that the charging barrel is sealed after feeding, the purpose that the ice distribution is smooth when a nozzle outlet is changed to become smaller and the surface pressure of the pollutant is higher than atmospheric pressure is achieved.