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The Lannigou gold deposit in southwestern Guizhou Province is a Carlin-type-gold deposit controlled by large typical fault�� Carriying on the ore-forming simulations and experiments involving in ore-controlling tectonics��we have searched on wall-rock deformation and fracture��metallogenic material activation��mobilization�� precipitation and accumulation under high T and P conditions caused by tectonic movement�� Before and after experiments�� the analyses of back scattered electron imaging and selection composition are made to observe mineral micro textures in order to explore the mobilization and enrichment of Au-rich minerals�� The silicates and some minerals ( enriched in Fe��S and As) of the host rocks would migrate to wall-rock fractures and subsequently precipitate��