A buckle assembly, comprising: a first buckle member, a second buckle member, and a third buckle member; wherein the second buckle member comprises a connecting base and two elastic tabs, and the two elastic tabs are disposed on the connecting base respectively and are oppositely disposed; two first clamping protrusions are respectively disposed on the same ends of the two elastic tabs, and form a first latching structure; two second clamping protrusions are respectively disposed on the other ends of the two elastic tabs, and form a second latching structure; the connecting base is opened with a through hole, a first latching portion is disposed on the first buckle member, and the first latching portion is latched with the first latching structure; a second latching portion is disposed on the third buckle member, and the second latching portion passes through the through hole and is clamped with the second latching structure, or the second latching structure passes through the through hole and is latched with the second latching portion; wherein the first clamping protrusions of the two elastic tabs are respectively disposed on one side of the two elastic tabs, and are disposed oppositely; the first latching portion is a latching port, and the first latching structure extends into the latching port and is clamped with the first buckle member; the second clamping protrusions of the two elastic tabs are respectively disposed on the other side of the two elastic tabs, and are disposed oppositely; the second latching portion is a latching pin, and the first latching pin extends into between the second clamping protrusions of the two elastic tabs and is clamped with the second latching structure; characterized in that: two connecting plates are protruded from the connecting base, and the two elastic tabs are respectively disposed on one end of the two connecting plates away from the connecting base and form an elastic structure having a h-shaped cross section; a limit groove is formed between the first clamping protrusions and the connecting plates, and the first buckle member is disposed in the limit groove. wherein the second buckle member comprises a connecting base and two elastic tabs, and the two elastic tabs are disposed on the connecting base respectively and are oppositely disposed; two first clamping protrusions are respectively disposed on the same ends of the two elastic tabs, and form a first latching structure; two second clamping protrusions are respectively disposed on the other ends of the two elastic tabs, and form a second latching structure; the connecting base is opened with a through hole, a first latching portion is disposed on the first buckle member, and the first latching portion is latched with the first latching structure; a second latching portion is disposed on the third buckle member, and the second latching portion passes through the through hole and is clamped with the second latching structure, or the second latching structure passes through the through hole and is latched with the second latching portion; wherein the first clamping protrusions of the two elastic tabs are respectively disposed on one side of the two elastic tabs, and are disposed oppositely; the first latching portion is a latching port, and the first latching structure extends into the latching port and is clamped with the first buckle member; the second clamping protrusions of the two elastic tabs are respectively disposed on the other side of the two elastic tabs, and are disposed oppositely; the second latching portion is a latching pin, and the first latching pin extends into between the second clamping protrusions of the two elastic tabs and is clamped with the second latching structure; characterized in that: two connecting plates are protruded from the connecting base, and the two elastic tabs are respectively disposed on one end of the two connecting plates away from the connecting base and form an elastic structure having a h-shaped cross section; a limit groove is formed between the first clamping protrusions and the connecting plates, and the first buckle member is disposed in the limit groove.