The invention mainly aims to provide an air conditioner indoor unit and an air conditioner with the same. The air conditioner indoor unit includes a main shell, a fresh air device and a cooling and heating device, the fresh air device and the cooling and heating device are arranged in the main shell, and the cooling and heating device is provided with an air inlet side for air inlet; the air conditioning indoor unit further includes a guiding member which communicates with the fresh air device, so that fresh air flowing out from the fresh air device enters the guiding member, and the guiding member guides the fresh air to the air inlet side of the cooling and heating device. The air conditioner indoor unit solves the problem that the ventilation effect of an air conditioner in the prior art is poor.