A charging coupling for a robotic device, comprising: a first charging assembly, the first charging assembly comprising a first elastic terminal and a second elastic terminal, a receiving space being formed between the first elastic terminal and the second elastic terminal, a tapered opening being provided on one side of the first charging assembly, the tapered opening communicating with the receiving space; a second charging assembly adapted to the first charging assembly, one side of the second charging assembly being provided with a protrusion, a hook-shaped third elastic terminal and a hook-shaped fourth elastic terminal disposed on the protrusion, the third elastic terminal comprising a first convex portion, a third fixing portion and a first hook portion, the first convex portion being located at one end of the third fixing portion connected with the first hook portion, and the other end of the third fixing portion being provided with a first fixing port and the fourth elastic terminal comprising a second convex portion, a fourth fixing portion and a second hook portion, the second convex portion being located at one end of the fourth fixing portion connected with the second hook portion, and the other end of the fourth fixing portion being provided with a second fixing port and wherein the first convex portion being used for inserting it into the receiving space through the tapered opening, such that the first elastic terminal and the second elastic terminal are respectively in elastic contact with the third elastic terminal and the fourth elastic terminal, characterized in that the protrusion comprises a terminal fixing assembly comprising a first fixing plate, a second fixing plate and a built-in plate, and the first fixing plate and the second fixing plate are arranged on both sides of the built-in plate, a first embedded groove being provided between the first fixing plate and the built-in plate, a first fixing buckle being provided on the side of first fixing plate facing away from the built-in plate, the first hook portion being embedded in the first embedded groove, the first fixing port being detachably connected to the first fixing buckle, a second embedded groove being provided between the second fixed plate and the built-in plate, a second fixing buckle being provided on the side of the second fixed plate facing away from the built-in plate, the second hook portion being embedded in the second embedded groove, the second fixing port and the second fixing buckle being detachably connected. a first charging assembly, the first charging assembly comprising a first elastic terminal and a second elastic terminal, a receiving space being formed between the first elastic terminal and the second elastic terminal, a tapered opening being provided on one side of the first charging assembly, the tapered opening communicating with the receiving space; a second charging assembly adapted to the first charging assembly, one side of the second charging assembly being provided with a protrusion, a hook-shaped third elastic terminal and a hook-shaped fourth elastic terminal disposed on the protrusion, the third elastic terminal comprising a first convex portion, a third fixing portion and a first hook portion, the first convex portion being located at one end of the third fixing portion connected with the first hook portion, and the other end of the third fixing portion being provided with a first fixing port and the fourth elastic terminal comprising a second convex portion, a fourth fixing portion and a second hook portion, the second convex portion being located at one end of the fourth fixing portion connected with the second hook portion, and the other end of the fourth fixing portion being provided with a second fixing port and wherein the first convex portion being used for inserting it into the receiving space through the tapered opening, such that the first elastic terminal and the second elastic terminal are respectively in elastic contact with the third elastic terminal and the fourth elastic terminal, characterized in that the protrusion comprises a terminal fixing assembly comprising a first fixing plate, a second fixing plate and a built-in plate, and the first fixing plate and the second fixing plate are arranged on both sides of the built-in plate, a first embedded groove being provided between the first fixing plate and the built-in plate, a first fixing buckle being provided on the side of first fixing plate facing away from the built-in plate, the first hook portion being embedded in the first embedded groove, the first fixing port being detachably connected to the first fixing buckle, a second embedded groove being provided between the second fixed plate and the built-in plate, a second fixing buckle being provided on the side of the second fixed plate facing away from the built-in plate, the second hook portion being embedded in the second embedded groove, the second fixing port and the second fixing buckle being detachably connected.