Abstract: The Nanzhuhe tin deposit in Dupangling area is developed in the endo- and exo-contact zones of a granite body. The mineralized veins are mainly controlled by the fracture syetem. Through a combined study of both ground surface and deep structures, this paper found that the mineralized veins of this deposit have a“ increasing distance pattern” in space distribution:namely, all the intervals between mineralized veins within a vein group in the crosswise direction, the intervals between vein groups in the crosswise direction, and the intervals between the mineralized blocks within a mine district in the longitudinal direction, have a regularity of progressively increasing distance pattern. This regularity is also valid for the Furong and Jiumao-Liuxiu tin ore-fields etc. in the Nanling metallogenic belt and of significance for exploration work in the study area and the Nanling Mountains region as a whole. The relation of this regularity with fracture structure development is also discussed in this paper.