The invention discloses a supporting and connecting assembly used for being extended and connected with external equipment. The supporting and connecting assembly comprises an auxiliary shooting rod and a bearing seat. The auxiliary shooting rod comprises a rod body and a connecting part which is movably arranged at the tail end of the rod body, and the rod body comprises a holding rod which a user can hold with hands. The connecting part comprises an extending joint which is provided with an anti-slip area. The bearing seat comprises a seat body and accommodating space which is used for supporting the bottom of the external equipment, and the seat body comprises an extending joint which is arranged at the bottom and far from one side of the accommodating space. The extending joint of the bearing seat can be matched and connected with the extending joint of the auxiliary shooting rod, and the anti-slip area can make contact with the bottom surface of the seat body and is used for preventing the bearing seat from sliding. The extending joint of the auxiliary shooting rod of the supporting and connecting assembly is provided with the anti-slip area, and the connection stability of the auxiliary shooting rod and the bearing seat is improved.