The invention discloses a classifying damper, belongs to the technical field of constructional engineering structure earthquake proofing technique, and is used for solving the problem of broadening the using range of a damper, according to the key points of the technical scheme, the classifying damper comprises a sliding damper, a spring damper and a connecting part which connects the sliding damper and the spring damper, and when the sliding damper stops moving, the connecting part starts the spring damper, the classifying damper has the effects that no matter what the classifying damper encounters shock of smaller or larger intensity, adaptive energy dissipation can be conducted, therefore, by using the connecting part, sliding friction energy dissipation is achieved during small shock, spring energy dissipation is achieved during large shock, and adaptive selection is conducted through the connecting part according to shock intensity, in this way, the using range of the classifying damper is tremendously broadened.