The invention relates to an air conditioner unit, in particular to a wall-mounted jet flow air conditioner unit and a control method thereof. The unit comprises a shell and a spherical spraying opening device and further comprises two proportional adjusting airtight air valves, two refrigerating heat exchangers and two speed-adjustable draught fans. The spherical spraying opening device is arranged at the middle portion of the front end face of the shell. The two speed-adjustable draught fans are installed at the left end portion and the right end portion of the shell correspondingly. The two proportional adjusting airtight air valves are installed on the end faces of the left end and the right end of the shell correspondingly. The two refrigerating heat exchangers are installed on the two sides of the part, behind the spherical spraying opening device, of the interior of the shell correspondingly. According to the wall-mounted jet flow air conditioner unit and the control method thereof, the proportional adjusting airtight air valves and the speed-adjustable draught fans are arranged on the two sides of the shell, the spherical spraying opening device is arranged at the front end of the shell, the two proportional adjusting airtight air valves and the two speed-adjustable draught fans work at the same time to achieve a two-side air suction mode, one proportional adjusting airtight air valve and one speed-adjustable draught fan on the same side work at the same time to achieve a single-side air suction mode, and the proportional adjusting airtight air valves are arranged on the two sides of the shell correspondingly and can achieve a ventilation work mode.