The invention discloses a vertical air conditioner indoor unit and a control method thereof. An image capturing device is hidden in a rotating shell to prevent the image capturing device from being found or destroyed; external light can enter the image capturing device through a light transmitting region to achieve an image capturing function; the image capturing device performs 360-degree rotation under the driving of the rotating shell to achieve 360-degree monitoring. According to the vertical air conditioning indoor unit, the hidden installation and image capturing function of the image capturing device are achieved, so that the indoor unit has a function of indoor safety monitoring, the concealment and safety of the monitoring are achieved, and the problem that the installation position of monitoring equipment in the prior art is not sufficiently hidden and is easy to discover is solved.