The invention discloses a preparation method for a novel electrical heating type air absorption element. The preparation method comprises the following steps that (1), an air absorption alloy material is prepared, specifically, a crushed air absorption alloy is sieved through a vibrating sieving machine, air absorption alloy powder with the specific grain size range between upper and lower screens is obtained, the air absorption alloy powder with the grain size range is immersed in anhydrous ethanol to be subjected to ultrasonic treatment, and the treated air absorption alloy powder is dried for standby application; (2), a metal alloy pipe is prepared, specifically, micropores formed in a dot matrix net type structure are drilled in the pipe wall of the metal alloy pipe, and the drilled metal alloy pipe is cleaned through ultrasonic waves and dried in the air for standby application; and (3), the air absorption element is prepared, specifically, the metal alloy pipe is filled with the treated air absorption alloy powder, and the air absorption element is prepared. According to the preparation method, the technology process is simple and easy to control, the defects of powder falling, inconvenient assembly, wire breaking and the like of an existing air absorption element are overcome, and the air absorption element prepared through the method has higher mechanical strength and machining precision.