A connector structure, being capable of connecting with an external connector, includes a chassis, a first electronic assembly, a flexible connecting piece and a second electronic assembly. The chassis has an opening. The first electronic assembly includes a first pin-set. The flexible connecting piece is located on the surrounding of the first pin-set, and the first electronic assembly is connected with the chassis by the flexible connecting piece, so that first pins are exposed from the opening. The second electronic assembly is located inside the chassis and includes a second pin-set, wherein the second pin-set is located below the first pin-set and keeps a distance from the first pin-set. The external connector is electrically connected with the first pin-set for deforming the flexible connecting piece, such that the first pin-set moves downward and is electrically connected with the second pin-set.