Abstract: Based on traditional Chinese medicine and ancient Eight-Trigram theory, a wearable five-color phototherapy device is invented for a unique painless, drug-free, non-invasive, and true green organic therapy by using light energy on some particular areas of a person's skin. There are multiple light-emitting components which is a number of light-emitting elements arranged in each of Eight-Trigram positions are designed on the bottom of this device. These multiple light-emitting components produce color of red or green or white or yellow or black or no color in each of Eight-Trigram positions. A software or App is developed to directly or remotely control and communicate with such device and provide the optimal solution for the five-color phototherapy.