The invention discloses a cooking fume recyclable self-cleaning range hood which comprises a main shell, a fixed base, an oil discharge opening, a pin shaft, an exhaust pipe, a negative pressure motor, a blade fan, a filter screen and a supporting frame. The main shell is installed on the fixed base through the pin shaft. The oil discharge opening is formed in the bottom of the fixed base. The negative pressure motor is installed on the right side of the main shell. The blade fan is installed on the negative pressure motor. A filtering shaft is installed on a filtering motor and provided with the filter screen. A partition plate is arranged at the lower portion of the filter screen. A cooking fume sedimentation chamber is formed at the upper portion of the partition plate. An electric heating wire is installed at the lower portion of the partition plate. An exhaust pipe is installed at the upper portion of the main shell. A switch is installed at the lower portion of the main shell. Oil in cooking fume in the cooking process can be collected and can be used for cultivation, the oil utilization rate can be increased, environment pollution is reduced, self-cleaning of the range hood can be effectively achieved, and the device is easy to operate and convenient to apply.