Modular structure for passenger car air channel luggage carrier

The invention discloses a modular structure for a passenger car air channel luggage carrier in the technical field of automobile industry. The modular structure is provided with a luggage carrier inner sealing plate, an air way side plate, a side plate positioning plate, a luggage carrier bottom plate and luggage carrier lifting pillars. One end of the air way side plate is detachably fixed to theside plate poisoning plate. The side plate positioning plate is fixedly connected with the side wall of a passenger car. The other end of the air way side plate is detachably fixed to a second fixingprofile. The luggage carrier inner sealing plate is fixed to the second fixing profile and a top fixing profile and is fixedly connected with the multiple luggage carrier lifting pillars through thesecond fixing profile and the top fixing profile. Each luggage carrier lifting pillar comprises an upper lifting pillar frame and a lower n-shaped frame lifting pillar beam which are integrally connected, wherein the upper lift