The Da Hinggan Mountains metallogenic belt extends eastwards from arid desert area and the semi arid desert grassland area to the forest swamp areas and mostly belongs to the trouble areas in regional geochemical exploration. Due to the influence of the eolian sand and organic matter,anomaly verification fails to show obvious ore exploration effects. In view of such a situation,the authors put forward the opinion of carrying out 1∶ 500 000 geochemical survey in the Da Hinggan Mountains metallogenic belt,wit...