An anion air bath machine includes: a shell body, a plurality of air inlets and a plurality of air outlets which are arranged on the shell body, an air duct, a fan, a heating system, an anion generator and a control system which are arranged in the shell body; the air outlets are communicated with the air inlets through the air duct, the fan sends the air which flows through the air inlets to the air outlets for blowing out, the air outlets are the direction changing air outlets of 360 degrees; the fan, the heating system, the anion generator and the control system are electrically connected. The usage of the anion air bath machine of the invention can quickly dry the water on the body surface after bathing, effectively substitute towel and other traditional cleaning methods, avoid the bacterial infection caused by the repeated usage of the towel and also reduce the using amount of the towel to save management cost; at the same time, the anion air bath machine has the functions of temperature control, air purification, adjunctive physiotherapy and so on, in addition, the usage is convenient, the temperature, the time and the air speed are adjustable, the air direction is changeable by 360 degrees, so the invention is safe, comfortable, healthy and environmentally protective.