The invention discloses an air conditioner controlling method, a device and an air conditioner, wherein the air conditioner controlling method includes the steps of obtaining air conditioner operationenvironment parameters; determining the air conditioner target temperature according to the air conditioner operation environment parameters. The air conditioner operation environment parameters include indoor humidity, indoor temperature, outdoor temperature, set temperature, and electrical parameters of air conditioner system components. The air conditioner operation environment parameters include multiple parameters. The parameters that affect the temperature controlling of the air conditioner greatly can be taken into account; the temperature controlling precision of the air conditioner can be improved; according to the air conditioner operation environment parameters and according to the target temperature determined according to the environment parameters, closed-loop control can beconducted on air conditioner compressor frequency; adjusting temperature of the air-conditioner can be controlled more precisely; and high comfort and good user experience of the air conditioner canbe ensured.