Purpose: This study explored possible risk factors influencing the development of colorectal cancer by comparing life habits of colorectal cancer patients and healthy adults. Methods: The study was designed as a retrospective comparison survey study of the colorectal cancer patient group and healthy adult group. 107 colorectal cancer patients in a university hospital and 124 healthy adults were recruited from October 2011 to August 2012. Data were analyzed using descriptive statistics, ${chi}^2$-test/t-test and logistic regression with the SPSS program. Results: Consumption of instant food products, lower stress management, burned meats and unhealthy eating habits were shown to be risk factors in development of colorectal cancer. Conclusion: Based on the results of this study comparing colorectal cancer patients and healthy adults, minimizing consumption of instant food products, development of healthy eating habits of consuming more vegetables, cooking meat slightly, and effective management of stress levels are recommended.