Abstract: A flexible plastic snap-receiving socket (110) comprises a mounting panel (112), two support legs (111) arranged to be spaced apart from each other, and a weakening structure (113). Two opposite ends of the mounting panel are respectively connected to a top end of the support legs via the weakening structure. The weakening structure is U-shaped, and comprises a bottom wall (113a) and a side wall (113b, 113c). The snap-receiving socket can match with the existing plastic snap (120), and realize an effective connection between a vehicle back door trim panel (1) and a vehicle back door (2). Moreover, in a high-temperature or low-temperature ambient environment, the snap-receiving socket can ensure a good appearance matching between the vehicle back door trim panel and the vehicle back door in an installed state.