The purpose of this study is to analyze the various problems to apply HACCP prerequisites to small and medium food companies. Firstly, we identifies the 55 factors from HACCP prerequisites and additional considerations. Then, we measure the levels of importance and performance in the view of small and medium food companies. Finally, we propose concentrated improvement factors by Importance and Performance Analysis(IPA). These findings are expected to help applying HACCP effectively to small and medium food companies where it should be implemented in the near future.