The invention discloses a first-aid device for patients with heart failure in cardiology department, relates to the technical field of first-aid equipment, and mainly is used for solving the problemsof complicated operation and low first-aid efficiency of a conventional first-aid method, wherein the first-aid device includes a door type mounting frame and an external chest compression assembly and also includes a defibrillation assembly; the external chest compression assembly includes a frequency conversion motor, a disk, a movable rod, a threaded rod, a regulating sleeve, a compression spring and a pressing plate; the defibrillation assembly includes a second electric push rod, a second mounting plate and a defibrillator; the first-aid device is provided with the external chest compression assembly and the defibrillation assembly. Through quick conversion cooperation of external chest compression and defibrillation, cardiopulmonary resuscitation is carried out for patients, the rescue efficiency is improved, the first-aid device can be carried out by one-person control, and the time and manpower are saved; through arrangement of the frequency conversion motor, the regulating sleeve and the compression spring, the compression frequency can be regulated through regulation of the rotation speed of the frequency conversion motor; by turning the adjusting sleeve, the length of the compression spring can be regulated to achieve the effect of regulating the compression force.