Air conditioner indoor unit with convertible air inlet and air outlet and air conditioner

The utility model provides an air conditioner indoor unit with a convertible air inlet and air outlet and an air conditioner, the air conditioner indoor unit comprises a shell, a cavity is formed in the shell, fan blades and a heat exchanger are arranged in the cavity, the heat exchanger divides the cavity in the shell into an air inlet cavity and an air outlet cavity, and the fan blades are arranged in the air inlet cavity. A first air port and a second air port are formed in the shell, a reversing structure is arranged in the cavity and movably arranged at the positions close to the first air port and the second air port, the flow direction of air flow in the cavity can be changed through the reversing structure, the first air port can be communicated with the air inlet cavity through the reversing structure, and the first air port serves as an air inlet. The second air port is communicated with the air outlet cavity and serves as an air outlet; or the first air port is communicatedwith the air outlet cavit