PURPOSE: The purpose of the study was to examine the relationships among social support (network, composition, and satisfaction), stress, and loneliness in migrant Yanbian Korean workers. METHOD: Data were collected by using Social Support Questionnaire 6, Visual Analogue Scale, and the Revised UCLA Loneliness Scale. RESULT: Results indicate that means for social support were 1.52 for network size and 4.83 for satisfaction. The proportion percentage of network for kin members was 67.37. Subjects felt the moderate level of stress and loneliness. The level of loneliness was negatively related to the level of social support. CONCLUSION: This study showed that there is necessity to reduce stress and loneliness among migrant Yanbian Korean workers. Adequate social support satisfaction is crucial to reduce the level of loneliness in migrant Yanbian Korean workers.