The invention belongs to the technical field of coats, and provides a heat dissipation coat. The heat dissipation coat comprises a collar, a right front part, a left front part, a right sleeve, a left sleeve and a back part, wherein 3-5 through poles are evenly formed in the collar; three through holes are formed in the portion, close to the axilla portion of the coat, of the right front part; three through holes are formed in the portion, close to the axilla portion of the coat, of the left front part; two through holes are formed in the portion, close to the axilla portion of the coat, of the left sleeve, and 2-4 through holes are formed in the rest parts; two through holes are formed in the portion, close to the axilla portion of the coat, of the right sleeve, and 2-4 through holes are formed in the rest parts; 2-3 through holes are horizontally formed in the portion, close to the neck portion, of the back part. The invention aims at providing the heat dissipation coat. According to the heat dissipation coat, a plurality of through holes are formed in a plurality of parts of the coat respectively, and when sweat is discharged after people exercise, the sweat can be excreted to the outside of the body from the through holes at any time. The situation that people have a cold is effectively avoided, the design is simple and reasonable, the practicability is high, and the coat is suitable for wide popularization.