Abstract: Abstract: Yantai is one of the core cities of Shandong?Peninsula Blue Economic Zone. Based on ecological geochemical data, the authors found that the main pollution?factors of soil are Hg, Cd, As, Cu, Pb, Zn. Industrial?waste emissions?constitute the main sources?of heavy metals in the soil. Soil acidification is caused by?acid rain which comes form excessive application of chemical fertilizer?and industrial?pollution. The activation and migration?capability?of root-soil cadmium in acid environment?is enhanced, the activation and migration of toxic heavy metal cadmium?are realized through?the soil water plant, and such toxic heavy cadmium is?transferred to?the human body?through the food chain, which increases the risk. Soil heavy metal pollution and soil acidification are two major factors affecting urban ecological environment of Yantai. The results of this survey provide the scientific basis for local land pollution prevention and land management.