A management system for a "real-world study on millions of clinical cases", the system comprising a remote management center (1), multiple medical technician recruitment stations (2), multiple subject terminals (3), and multiple recruitment devices (4) for recruiting subjects. The system can realize the collection of a large amount of data, and can recruit subjects efficiently at a low cost. Furthermore, a coating on the tongue is selected to be a typical physical sign, and is classified and stored. The information barriers between one million subjects and doctors and between millions of subjects and pharmaceutical companies are broken. Two-dimensional codes allocated by the system are the data wealth of a study initiator, and carriers for demands, such as doctor education and seeking doctors for treatment, are further realized. The system further predicts or mines, by means of big data, more adaptabilities of medicaments/preparations, such as Huoxiang Zhengqi liquid, and provides data support for tracking the safety of the medicaments/preparations after the medicaments/preparations come into the market.