According to the on-site measurement of surface natural radionuclides 40 K, 232 Th, and 238 U, the influences and causes of geological conditions and surface media on radioactivity level in Jinzhou Binhai new area areas were analyzed. The influence of natural radioactivity level and its distribution were summarized by massive measured data, too. The results reveal that the average radioactive of nuclides 40 K, 232 Th, and 238 U in the region was 810.83 Bq/kg (range value 87.80−2284.90 Bq/kg), 38.58 Bq/kg (range value 3.65−129.11 Bq/kg), and 26.05 Bq/kg (Range value 1.24−58.05 Bq/kg). The concentration of 238 U and 232 Th nuclides were slightly lower than the national and world average, and 40 K concentration was significantly higher than the average. The external exposure index was between 0.14−1.03, far less than the national limit of the external exposure index of building materials. The external exposure index of the measuring point D0107 exceeded 1, reaching 1.03. The annual effective dose rate varied from 0.03 to 0.19 mSv/a, and the average value was 0.08 mSv./a, which was much lower than the 1.0mSv limit for the annual public dose of public exposure recommended by the International Committee for the Prevention of Radiological Protection (ICRP) Recommendation No. 82. Through environmental assessment through big data, the result showed that the distribution of radiation levels in Jinzhou Binhai was relatively stable in the non-polluting situation.