The invention discloses a clinical detection device convenient for electrocardiogram, and relates to the technical field of electrocardiogram detection. Aiming at the problems that the use is influenced because the legs of a user are easily blocked by a horizontally placed paper conveying plate and the horizontally placed paper conveying plate occupies more space and is difficult to store becauseprinters of some existing clinical detection devices for electrocardiogram are positioned on the bottom side of a machine body, the invention provides the following scheme that the clinical detectiondevice comprises the machine body and the printer positioned on the front surface of the machine body, wherein the bottom side of the front surface of the printer is fixedly connected with a paper conveying straight plate. According to the clinical detection device, through a folding design between a paper conveying inclined plate and the paper conveying straight plate, the occupation of space isreduced, the paper conveying inclined plate and the paper conveying straight plate are convenient to store, meanwhile, the paper conveying inclined plate and the paper conveying straight plate which are horizontally placed are prevented from blocking the legs of the user, and through the design of a fixing block and a paper pressing sheet, placed printing paper is convenient to press, so that theprinting paper can be placed along the direction of the paper conveying inclined plate and the paper conveying straight plate.