Objective To get known about the employment intentions to primary health service organizations (PHSO) among medical students in North Sichuan Medical College, and to assess its main influencing factors, so as to provide scientific evidence for occupational guidance in medical colleges, as well as talent introduction and retention in PHSO. Methods By cluster sampling method, medical undergraduates and college students in North Sichuan Medical College were investigated using a self-designed questionnaire from April to October, 2010. EpiData 3.1 and SPSS 16.0 software were used for inputting data and analyzing respectively. Results a) Among 900 questionnaires distributed, 870 were reclaimed (response rate 96.7%). b) Nearly 60% of medical students thought their own professional development was “average”, with following intentions after graduation in order: employment first and then postgraduate entrance exam, employment, postgraduate entrance exam; and 85% of medical students were more willing to work in medical institutions above level-2 in city or county. c) More than 70% of medical students’ employment intentions to PHSO were “average”, and “unwilling”, etc.; the main influencing factors were personal development space, salary and welfare, and comprehensive strength of hospital, etc. d) More than 90% of medical students “Do not know” or “generally” understood the related national preferential policies. Conclusion Government, PHSO and universities should take measures together and increase policy advocacy and infrastructure investment, so as to encourage medical students to work in PHSO.