It is rare to find separating force majeure from risks, whatever obvious and/or potentialones, involved in projects in the fields of researches; and in the scopes of law study. It is also not difficult to conclude that expertise puts focus on the definitions， limitations, preconditions, citing, and demonstrating of force majeure. Moreover, in practical cases, to impose private investors on bearing the results of unforeseen changes in projects has almost been no exception to be determined before the project is open to bid. This kind of arrangement is no doubt a positive factor to reduce the willingness of private investors to participate, especially on the BOT approach basis projects, owing to its long-term and high capital cost characteristics. Therefore, this paper aims at discussing whether or not it is possible by way of certainal location rules of unforeseen risks to relieve, transfer, and reasonably distributeunpredictable changes effects between two partiesactually occur. The major concern that force majeur risks shouldn't be unilaterally born by one party is that BOT projects are proposed usually under the promotion of economic benefits to the country﹒But sharing risks indicates covering loses, revealing financial ability and endurance issues for both parties. Therefore, we hope, by putting efforts on risk allocation and financial limitation of both sides, it will help to settle and establish a model for contracts negotiations on force majeure.