The invention provides a wearable old people ICU first-aid device which comprises a garment face, sleeves, a first zipper, a second zipper, a third zipper, a cardiac pacemaker, an electronic sphygmomanometer, a breathing machine, a cover body, an air bag, a rubber tube, an emulsion ball and a storage battery. A neckline is arranged at the upper end of the garment face. The cardiac pacemaker is installed at the upper right corner of the front end face of the garment face. The electronic sphygmomanometer is assembled in the middle of one sleeve. The breathing machine is installed on the rear end face of the garment face. The first zipper is sewn in the middle of the front end face of the garment face. The second zipper is sewn in the sleeve. The third zipper is sewn at the upper portion of the front end face of the garment face. The cover body is installed at the neckline. The right end of the rubber tube is connected with the air bag. The left end of the rubber tube is connected with the emulsion ball. An electric energy storage assembly is installed on the rear end face of the garment face. A shell is assembled on the rear end face of the garment face. The storage battery is installed inside the shell. The wearable old people ICU first-aid device is novel structure, convenient to wear and operate, wide in application range, safe and reliable.