The difficulty of financing small and micro enterprises seems to be a well-known problem. The average life expectancy of most small and micro enterprises is only 3 years. The risk of itself makes financial institutions prohibitive. How can we solve this problem? The author gives his own thinking from the data, credit investigation and other aspects. To cure the disease and save the life, pay attention to the right medicine. But the right medicine is not the end. If the symptom is not the cause, it will be a headache and a foot pain, and the symptoms will not be cured. The same is true for small and micro enterprises. Difficulty in financing and expensive financing are symptoms. Expanding telemarketing list financing channels and lowering loan interest rates are symptomatic treatments, which can be temporarily relieved. At the same time, it is necessary to trace the source and analyze the cause. Prescribe the medicine for the cause, and the prescription is the cure for the root cause. From the perspective of economic transformation, the service industry and technological innovation-oriented enterprises represent the future direction; from the current industry practice, for such enterprises, credit loans are far more efficient than pledged loans. For credit loans, you can only rely on data - low-cost, batch-based access to real business data (or data that can reflect business conditions). Therefore, whether the real pre-loan and post-loan data of small and micro enterprises can be obtained at low cost and in batches has become the fundamental way to solve the current financing difficulties of small and micro enterprises. From this perspective, the social value of small and micro finance is not only limited to how many loans are issued, but the greater value lies in how many small and micro enterprises have established credit files.