It is impossible to effectively control and predict the development direction, trend and consequences of things in the company. From the point of view of intelligence, it is the weakening, loophole or functional obstacle of intelligence function and information feedback system. Solving problems and resolving crises is still inseparable from information collection and investigation and evidence collection. When it is difficult for enterprises to accomplish the above tasks by relying on their own intelligence, or out of consideration of prudence and strict confidentiality, business investigation can achieve this function.