Abstract: Disclosed is a compatible and magnetic absorption-type electronic building block, which comprises a circuit board, a plug connector and a socket connector, wherein the plug connector and the socket connector both comprise an insulation body and a conductive terminal, and the insulation body is arranged with a mounting body and two support feet. A bottom of the mounting body is arranged with an open region, and the mounting body is provided with a butting panel, a top panel and a rear cover. The electronic building block of the invention can not only implement electronic circuit module splicing, but also implement a complex three-dimensional modeling function due to the above specially designed structure. Moreover, the electronic building block can be seamlessly spliced to a common plastic building block in a market.