Air fryer with high cooking efficiency

An air fryer with high cooking efficiency, comprising a body and a cooking chamber disposed within the body, wherein the cooking chamber has a wind-guide plate at a rear end of the cooking chamber, a flow-guide plate is disposed in front of the wind-guide plate, a flow channel is formed between the flow-guide plate and the wind-guide plate, a centrifugal fan is arranged within the flow channel, the flow channel comprises a left flow channel and a right flow channel that extend to both sides of the flow channel and connect with the cooking chamber, the left flow channel and the right flow channel are symmetric about a central axis, the left flow channel comprises an upper left flow channel and a lower left flow channel located below the upper left flow channel, a width of the upper left flow channel is smaller than or larger than a width of the lower left flow channel, the flow-guide plate is provided with a suction port at a center of the flow-guide plate, the suction port corresponds to the centrifugal fan, and a heating assembly is disposed within the cooking chamber and/or the flow channel.