The purpose to be achieved by the present invention is to provide: an anti-cadherin antibody having high internalizing capability and an (anti-cadherin antibody)-(medicinal agent) conjugate which can efficiently kill cancer cells that express cadherin and which is produced using the anti-cadherin antibody. The present invention provides an anti-cadherin antibody which can recognize a cadherin domain 1 (EC1) in cadherin and has high internalizing capability.