The invention discloses a processing method of carbon fiber weaving fabric. The method comprises the following steps of (10) weaving fabric clamping: clamping the two sides of the shearing edges of the cleaned and dried fabric weaving fabric by a double-layer rigid thin sheet; (20) surface nitriding: putting the clamped carbon fiber weaving fabric into a glow plasma processing machine, and performing low-temperature and low-pressure nitrogen ion processing to obtain the processed carbon fiber weaving fabric. The carbon fiber weaving fabric treated by the method has the advantages that the bonding with a resin base body is firm; meanwhile, good microwave absorption performance is realized.