High prevalence of worm infection in Indonesia (70-80%) partially identified as Soil Transmitted Helminthes (STH) from Nematodes, but Cestodes and Trematodes is also found in Indonesia. Worm infection named as neglected diseases because it doesn't cause mortality although reduced the quality of human resources. It will be important to do research to get the worm infection database for the effective planning action in worm infection fighting. It was an observational research by cross sectional design; research had been done in March-December 2010 in Nunukan, one of border areas, at 9 public health center areas. Population were all students of primary school in Nunukan, samples were primary school students chosen by purposive sampling. The research had been done by explain informed consent, distribution and collection of feces pot and microscopic analysis by direct method. Data were analyzed by Chi square in SPSS-13.0 program.The microscopic analysis found 20.8% positive worm infection of 1126 samples. The highest is caused by STH that is Ascaris lumbricoides and the highest proportion is found in village areas that the environment modification and infrastructure development doesn't work well. Students of primary school in the village areas have almost five fold risk to get worm infection than city areas. Worm infection tends to be higher in village areas compare to that of city areas because the environment modification and infrastructure development in city areas is better than village areas.