A vertical air conditioner indoor unit, comprising a housing, which is provided with an air outlet; and an air guide body, which is movably mounted on the exterior of the housing and is configured to be able to move to a position facing the air outlet so as to guide the air supply airflow flowing out of the air outlet to flow upward and/or downward along the peripheral surface of the housing, or moves to a position distant from the air outlet. The vertical air conditioner indoor unit in the present invention has an improved upward blowing effect and downward blowing effect.