Abstract: Conduct identification and evaluation of agronomic traits for potato germplasm resources both domestically and internationally. In order to screen excellent germplasm suitable for the high-temperature and high-humidity environment of spring planting in Quanzhou area. Conduct spring field trials in this region, Genetic diversity analysis was conducted on 8 quality traits and 4 quantitative traits of 81 germplasm resources. The results showed that the coefficient of variation for the eight quality traits of the tested potato germplasm ranged from 1.20% to 82.70%. Among them, the coefficient of variation for the smoothness of sweet potato skin was the largest. The Shannon-Weaver diversity index（H'）ranges from 0. 577 to 1.634. The qualitative traits with H' values higher than 1 were corolla color, maturity, skin color, flesh color, and seed setting ability. The coefficient of variation for the four quantitative traits of the tested potato germplasm ranged from 12.03% to 39.99%. The degree of variation in tuber number per plant, yield per plant, and yield per plot were relatively high. There were significant differences in traits among germplasms. The variation in the rate of marketable potatoes was the lowest. The inheritance of traits was relatively stable. The correlation analysis results showed that the yield per unit area was significantly positively correlated with the yield per plant and the rate of marketable potatoes. The marketable potato rate was highly significantly positively correlated with the yield per plot. The number of tubers per plant was significantly negatively correlated with the rate of marketable tubers. Extract 5 principal components through principal component analysis. The first three principal components encompassed yield per plot, yield per plant, marketable tuber rate, seed setting ability, corolla color, and bud eye traits. Through cluster analysis, The tested germplasm was divided into three major groups. The third major group was further divided into four subgroups. The first major group could be utilized for improving fertility and flesh color of sweet potatoes. The second major group could be used as core parental materials for the breeding of early-maturing varieties. In the third major group, The first subgroup could provide parental materials with distinctive color and high yield for breeding. Sub-group II was suitable for targeted breeding with a combination of tuber number and high marketable tuber rate. The third subgroup could serve as the core breeding backbone parent. The fourth subgroup could be utilized for the breeding of fresh food varieties that were adapted to local maturity, had a reasonable number of tubers, and exhibit a high rate of marketable tubers. These germplasm resources had broadened the parental genetic background for potato breeding in the Quanzhou region. They also accumulated systematic phenotypic basic data for subsequent research on related molecular mechanisms.