Range hood and smoke sensing control method

The invention discloses a range hood and a smoke sensing control method.The range hood comprises an air duct cavity communicated with an air suction opening, a smoke sensing detection device is arranged in the air duct cavity and fixedly installed on a push rod, the range hood further comprises a driving device fixedly connected to the range hood, and the driving device drives the push rod to move. The smoke detection device is in a fixed-point detection state that the smoke detection device performs positioning detection at a first detection position and a second detection position respectively, and the driving device drives the push rod and enables the smoke detection device to move from the first detection position to the second detection position, or the driving device drives the push rod and enables the smoke detection device to move from the first detection position to the second detection position. A state in which the smoke detection device is moved from the second detection position to the first dete