Negative oxygen ion machine for training recovery and sleep improvement of athletes

The utility model discloses a negative oxygen ion machine for training recovery and sleep improvement of athletes. The negative oxygen ion machine comprises a shell, a negative oxygen ion plate, an air duct and a fan, the shell comprises a top cover and a base plate, an air inlet is formed in one side of the top cover, and ventilation mesh holes are formed in the top surface of the top cover; the air duct is fixedly arranged in the shell, an air guide groove is formed in the air duct, an opening is formed in the side, facing the air inlet, of the air guide groove, and the fan is arranged in the shell and located between the air inlet and the opening; the top of the air guide groove is open and faces the ventilation mesh holes, the bottom of the air guide groove inclines from the lower end of the opening to the top of the air guide groove, and the negative oxygen ion plate is arranged in the top of the air guide groove. The negative oxygen ion machine can be flatly placed beside a bed head for use, the ventila