The invention provides a wall-mounted air conditioner indoor machine and a control method thereof. The control method of the wall-mounted air conditioner indoor machine includes the steps that an indoor human body is detected, and the position where a person is located is judged according to the scanning result of each wind feeding area; then according to the following/avoiding mode of the indoormachine set by a user, the wind outgoing direction is made to face/avoid the user; the user can select an indoor machine wind outgoing mode according to the actual condition, and for example, during refrigerating of an air conditioner, if the user feels that temperature is low, an avoiding mode can be selected so that direct blowing of the air conditioner can be prevented and air conditioner disease can be avoided; and for another example, during heating of the air conditioner, a following manner can be selected so that the user can be located in a warm air environment all the time. Accordingto the control method of the wall-mounted air conditioner indoor machine, the wind outgoing mode of the indoor machine is set according to the actual condition, intelligent wind outgoing of the air conditioner is achieved, meanwhile, the requirements of different users for wind outgoing of the air conditioner indoor machine are met, and the using experience of the user is improved.