The need to improve health condition is getting more necessary than ever for busy people. However, one lacking exercise time or practice the wrong way are often causing exerciser's health condition worse. The sport coach can provide professional consultant in advance to take care the exercisers training more efficiently under exercise plan or exercise prescription. In this study, we would like to propose cloud sport coach system architecture to support the exercisers. Sport coach makes exercise prescription according to exercisers' health examination data, physical fitness data, and exercisers' self-expectation. The exercisers train one selves according the prescription. The system will collect the daily exercise data and monitor with schedule. After a certain period the system the exerciser will take the health examination to verify the effectiveness of the exercise prescription.