A connection assembly, comprising: a support member, comprising: a support body and an accommodating groove on the support body; a first clamping member, comprising: a fixing part and a first clamping part, the fixing part and the support member being buckled to form an accommodating space with the accommodating groove, the accommodating space having an opening, and the first clamping part is adapted to be detachably clamped into a first clamping groove of a to-be-connected body by an external force; a second clamping member, comprising: a second clamping part and an elastic member, the second clamping part is arranged at least partially in the accommodating space, and the elastic member is connected to the second clamping part and located on a side, facing away from the opening, of the second clamping part, wherein the elastic member is elastically deformable by an external force to drive the second clamping part to be extended or retracted from the opening of the accommodating space to be clamped into or separated from a second clamping groove of the to-be-connected body; and a clamping face of the first clamping part and a clamping face of the second clamping part that are in different planes; characterized by, the connection assembly further comprising: a slider, comprising: an operating part and a sliding part; the second clamping member further comprising: a sliding groove, wherein the sliding part of the slider is in the sliding groove, the operating part can drive the sliding part to move in the sliding groove by an external force to generate an extrusion force to a wall of the sliding groove, and the extrusion force is transmitted to the elastic member by a body of the second clamping part to cause the elastic member to elastically deform. a support member, comprising: a support body and an accommodating groove on the support body; a first clamping member, comprising: a fixing part and a first clamping part, the fixing part and the support member being buckled to form an accommodating space with the accommodating groove, the accommodating space having an opening, and the first clamping part is adapted to be detachably clamped into a first clamping groove of a to-be-connected body by an external force; a second clamping member, comprising: a second clamping part and an elastic member, the second clamping part is arranged at least partially in the accommodating space, and the elastic member is connected to the second clamping part and located on a side, facing away from the opening, of the second clamping part, wherein the elastic member is elastically deformable by an external force to drive the second clamping part to be extended or retracted from the opening of the accommodating space to be clamped into or separated from a second clamping groove of the to-be-connected body; and a clamping face of the first clamping part and a clamping face of the second clamping part that are in different planes; characterized by, the connection assembly further comprising: a slider, comprising: an operating part and a sliding part; the second clamping member further comprising: a sliding groove, wherein the sliding part of the slider is in the sliding groove, the operating part can drive the sliding part to move in the sliding groove by an external force to generate an extrusion force to a wall of the sliding groove, and the extrusion force is transmitted to the elastic member by a body of the second clamping part to cause the elastic member to elastically deform. a slider, comprising: an operating part and a sliding part; the second clamping member further comprising: a sliding groove, wherein the sliding part of the slider is in the sliding groove, the operating part can drive the sliding part to move in the sliding groove by an external force to generate an extrusion force to a wall of the sliding groove, and the extrusion force is transmitted to the elastic member by a body of the second clamping part to cause the elastic member to elastically deform.