Double-layer shunting defrosting and demisting air duct structure of passenger car and automobile

The utility model provides a double-layer shunting defrosting and demisting air duct structure for a passenger car and an automobile. The air duct structure comprises an upper air duct layer and a lower air duct layer, an upper air duct is formed in the air duct upper layer, an upper-layer flow guide structure is arranged in the upper air duct, and the upper-layer flow guide structure can guide airflow in the upper air duct to a first preset area; a lower air duct is formed in the air duct lower layer, a lower-layer flow guide structure is arranged in the lower air duct, and the lower-layer flow guide structure can guide airflow in the lower air duct to a second preset area; according to the passenger car double-layer shunting defrosting and demisting air duct structure and the automobile, the double-layer air duct structure can be designed to be in butt joint with an air conditioner HVAC air outlet according to the size of the air conditioner HVAC air outlet, and therefore airflow is divided into a front lay