The invention discloses a phase coded signal deception jamming type identification method based on the complex similarity coefficient. The process comprises the steps that (1) a radar phase coded baseband signal is acquired; (2) the complex similarity coefficient is computed; (3) a joint feature vector is constructed; (4) a signal type database is constructed; (5) the joint feature vector is compared with the signal type in the database so as to judge whether the radar baseband signal type is a target echo signal or a certain deception jamming signal; and (6) identification of the radar phasecoded baseband signal is ended. The target echo and multiple deception jamming types can be effectively identified, and the method has the advantages of low computation complexity and high identification accuracy and can be used for radar target and deception jamming type identification.