College is a particularly important time for establishing and intervening in long-term health behavior patterns. However, young Chinese generations' eating behavior is not healthy enough, with the improvement of living standard, fewer fruits and vegetables, frequent breakfast skipping all result in an increasing rate of obesity. To educate college students to start a healthier eating habit, we created "Green Foodie", to provide a convenient way for college students to practice a healthy lifestyle and increase their responsibility towards themselves and society. We designed a combination of tangible interaction components and mobile application to suggest a suitable portion of food combination for college students. We also took advantage of multiple kinds of activities to engage college students to be persistent in this platform. We hope that college students can use this system to explore more healthy food and make a contribution to sustainability as well.