Smoke collecting assembly and range hood

The invention discloses a smoke collecting assembly and a range hood, and belongs to the technical field of electrical equipment, the smoke collecting assembly comprises a smoke collecting hood, a left side rectifying part and a right side rectifying part, the smoke collecting hood is provided with a smoke collecting cavity, a lower smoke inlet, a left smoke inlet, a right smoke inlet and a communicating port, and the lower smoke inlet, the left smoke inlet, the right smoke inlet and the communicating port all communicate with the smoke collecting cavity; the left smoke inlet and the right smoke inlet extend in the vertical direction and are both higher than the lower smoke inlet, and the communicating opening is used for being communicated with a rack assembly of the extractor hood; the left rectifying part and the right rectifying part are arranged in the smoke collecting cavity in the left-right direction, a left auxiliary air duct is defined between the left rectifying part and the inner wall of the smoke