The invention discloses a heat pump laundry dryer air outlet structure, comprising a shell and a cover plate; wherein, the heat pump laundry dryer is a roller type; a bucket for clothes is arranged inside the shell, an air-conditioning composite structure is arranged on the bottom of the shell, and a cold air outlet is arranged on a sidewall of the shell except the back; the cold air outlet and the cold air channel of the air-conditioning composite structure are communicated; the movable cover plate is pivoted on the cold air outlet; the cover plate opens to make the cold air outlet smooth toexhaust the cold air from the cold air outlet when the air-conditioning composite structure refrigerates the ambient air; the cover plate closes to cover the cold air outlet to prevent dust from going into the air-conditioning composite structure when the air-conditioning composite structure does not refrigerate the ambient air.