First, this situation should be caused by the blockage of the drain hole of the vehicle sunroof. Those with strong hands-on ability can dredge it themselves, and those with weak hands-on ability can go to the local beauty salon or go to the garage to ask the master for help.
Second, this may be caused by the blockage of the windshield drain.
Third, then check the drainage of air conditioning pipes.
Fourth, check whether the sealing strip on the door is loose.