Abstract: Through the analysis and summary of the content changes of all the trace elements and hydrocarbon components in different middle part of Longkou lead-zinc deposit，and the enrichment law and abnormal characteristics of the surroundings ore body，it concludes that the zoning sequence of primary halo can be classified as follows: the mine front is Hg，methane，ethane，propane，isobutane，n-butane，ethylene，propylene，the head is As，Sb，the middle is Ag，Cu，Pb，Zn，and the trail is Mo，Co，Ni.The geochemical anomaly zoning model is established and the prospecting guides are summarized to provide the scientific basis for prospecting prediction evaluation in the deep and peripheral area.

Key words: Hydrocarbons components, Anomaly zoning model, Longkou lead-zinc deposit