The financial risk of small and medium-sized enterprises [abstract]article explains the meaning of financial risk, types and measurement, on the basis of the financial risk revealed the formation reasons and puts forward the financial risk management countermeasures. This Some countermeasures in some extent could help small and medium-sized enterprise to carry on the reasonable financial risk decision to reduce the risks and improve management, improve the small and medium-sized enterprise efficiency. [keywords] financial risk,risk control,preventive measures Chapter1 The meaning of financial risks and species 1.1 The meaning of financial risk Since the 20th century, the understanding of risk since basically has the following kinds of ideas: (1) the risk is a kind of the possibility of loss or damage. This definition deeply discuss the risks and damage, emphasize the inner relation between the possibility of damage; (2) the risk is the loss of uncertainty; (3) risk is actual results and expected results differences. In the United States small Arthur Williams and Richard Hans collaborative book, risk management and insurance, in his book, the risk is defined as "in any given case and given period of time, that might happen the difference between the results." Difference is bigger, the greater the risk; Conversely, the smaller the difference, the risk is small. If there is a variety of results, then each results have its corresponding probability. If only a result, no risk at all. The above several views, the former two ideas are just will risk associated with loss, not with favorable aspects will risk associated. The risk for future performance in the economic field, the uncertainty of the result this...