[Objective] The research aimed to conduct objective evaluation on manner and effect of the artificial hail suppression operation in central Inner Mongolia.[Method] Depending on analyses of the radar observation data,hail shooting data and artificial hail suppression operation data in the middle region of Inner Mongolia(represented by Huhhot) from 1990 to 2007,and combining capability of the artificial hail suppression operation tool("37" anti-aircraft gun),nucleation rate of the catalyst and suitable catalyst volume in hail cloud per unit volume,objective evaluation of the manner and effect for artificial hail suppression operation in the area was obtained.[Result] It was exacter to distinguish shape and intensity of the hail cloud,but it was uncertain to distinguish height of the hail cloud,when selecting operation target cloud.Operation height was still lower,and perfect seeding height couldn't be attained.Operation occasion was controlled well,but there still were phenomena of the late operation.Shell amounts of the operation were few obviously,needing to increase shell amount or to improve nucleation rate of the catalyst.[Conclusion] Synthetically,manner of the artificial hail suppression operation in central Inner Mongolia was suitable,and total efficiency was about 85%.
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