Method and device of oil return control of air conditioner and air conditioner

The invention discloses a method and a device of oil return control of an air conditioner and the air conditioner. The method of the oil return control of the air conditioner comprises the following steps: detecting flow velocity v of refrigerating fluid in an oil return pipe, comparing the flow velocity v with preset flow velocity v , wherein the preset flow velocity v is the minimum flow velocity which is needed when the air conditioner returns oil; and when the flow velocity v is judged to be smaller than or equal to the flow velocity v , the air conditioner is controlled to carry out an oil return treatment. By the adoption of the method and the device of the oil return control of the air conditioner and the air conditioner, the problem that when the refrigerating fluid operates in slow speed, a compressor is easy to damage caused by fuel starvation in the prior art can be solved, so that the effect that the service life of the compressor is prolonged is achieved.