Portable dynamic electrocardiogram recorder

The invention discloses a portable dynamic electrocardiogram recorder. The portable dynamic electrocardiogram recorder comprises a main body and a cover body, a battery cavity for accommodating a rechargeable battery is arranged in the main body, the battery cavity is provided with an opening, and the cover body is used for covering the opening; a rotating shaft and a first elastic piece are arranged between the main body and the cover body, the cover body is rotationally connected with the main body through the rotating shaft, and when the cover body covers the opening, the first elastic piece is in an elastic compression state, so that the first elastic piece elastically abuts against the cover body and the main body, and the cover body has the tendency of rotating and opening relative to the main body. According to the portable dynamic electrocardiogram recorder, the service time can be prolonged by replacing a new rechargeable battery, and in the process of charging the taken-out rechargeable battery, the