The invention relates to an embedded diode antenna plate of a polyimide foam substrate and a production technology of the embedded diode antenna plate, and aims at solving the problems that the prior art is unreasonable in design and the like. The embedded diode antenna plate comprises a first foam layer which is arranged in the middle, wherein second foam layers are symmetrically arranged at two surfaces of the first foam layer respectively; the first foam layer and the second foam layers are made of a polyimide foam material respectively; an embedded diode circuit layer is arranged between the first foam layer and the second foam layers; the embedded diode circuit layer is connected with the first foam layer through a first low-temperature bonding sheet; and the embedded diode circuit layer is connected with the second foam layers through a second low-temperature bonding sheet. The production technology comprises the following steps: A, material preparation; and B, bonding. The embedded diode antenna plate has the advantages that the problem of deformation caused by an over-high temperature of a product is solved; and the interlayer alignment accuracy is greatly improved.