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Changing look active-galatic-nuclei (CL AGNs) can yield considerable insightinto accretion physics as well as the co-evolution of black holes and theirhost galaxies. A large sample of these CL AGNs is essential to achieve thelatter goal. We propose an effective method to select CL candidates fromspectroscopic quasar catalogs using the mid-infrared (MIR) variabilityinformation derived from ALL-WISE/NEOWISE data releases. Our primary selectioncriteria include both a large amplitude flux variation and a transition of MIRcolor from an AGN to a normal galaxy. A pilot spectroscopic follow-up of 7candidates among about 300 candidates selected from Sloan Digital Sky Surveylow-redshift (z<0.5) AGN sample results in 6 new turn-off CL AGNs. We expect toobtain hundreds of CL AGNs once full spectroscopic follow-up of the sample iscarried out.

Initial results from a systematic search for changing-look active galactic nuclei selected via mid-infrared variability