The invention discloses an automatic massager which comprises a massage chair, a massage device, a smearing device, a scanning device and a mechanical hand. The massage chair comprises a seat cushion, a back cushion, a foot pad and a chair support. The smearing device comprises a machine frame, a smearing assembly, a massage liquid bottle and a driving device. The massage device comprises a plurality of massage mechanisms and a massage mechanism fixing base. The mechanical hand comprises a mechanical hand fixing base, a first rotary arm, a first swing arm, a second swing arm, a third swing arm, a second rotary arm and a fixing plate. By means of the automatic massager, massage liquid can be quantitatively squeezed out and can be evenly smeared on a designated area of the skin surface of a patient, so the massage liquid can be sufficiently absorbed by the skin of the patient. In addition, by simulating massage actions of fingers, the automatic massager can massage acupoints of a human body and can also massage the human body in various modes such as grasping, kneading and pushing.