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In order to comparatively analyzing the effect of exploring the unusual geologic bodies with different devices of high•density electrical method��the authors forward calculated the resistivitiy of different devices and inversed the two-dimension resistivity adding noise through building high resistance anomalous body and latent erected low resistance geoelectric model��The inversion results of various devices show��when high resistance anomalous body is explored underground��wenner α, β and γ devices are better than others in exploring anomalous location and shape��for latent erected low resistance body��the wenner β and three-pole devices have good prospecting effect with the best device is wenner β��The experiment indicate that wenner α, β and γ devices perform their advantages in exploring underground air-raid shelter and verify the correctness of conclusion from theoretical modeling��