There are some particular rock and structure in the ore-bearing horizon of Luchaichong Pb-Zn deposit. According to the study, the authors think that the Pb-Zn deposit is resulted from the combination of many factors, such as, sedimentary environment, volcanism, metamorphic structure, ductile-brittle deformation structure and magmatism, etc. Especially, the metallogenesis is controlled by the horizon because the chemical environment of Daliantang Formation Lower Member is caused by the littoral marsh with barrier coast-lagoon environment and Maer volcanic eruption.