The invention relates to the technical field of detectors, and in particular relates to an identification detector. The identification detector comprises a base, an experimental platform, first supports, a second support, friction bars and infusion devices, wherein two first supports which are distributed front and back at intervals are fixed on the base at the right side of the experimental platform, the friction bar arranged above the experimental platform is fixed on each first support, a drainage blind hole with an opening downward is formed in the lower end of each friction bar, and a liquid inlet hole communicated with the drainage blind hole is formed in each friction bar; and the second support is fixed on the base between the two first supports, and two infusion devices respectively communicated with the liquid inlet hole in a one-to-one correspondence manner are arranged on the second support. The identification detector provided by the invention is reasonable and compact instructure and easy to use, and the friction bars which are respectively and independently provided with an infusion device are arranged, so that degreasing cotton absorbed with different reagents doesnot need to be frequently replaced when a plastic product is subjected to identification detection, both time and labor are saved, working efficiency is improved, and the identification detector provided by the invention has the characteristics of safety, labor conservation, simplicity and high efficiency.