The biggest challenge for knowledge management is how to make sure that right knowledge could be available to the right people on the right time for any purposes. Traditional search engines return relevant Web documents to keyword queries, where users have to read tedious documents to find the exact information they need. In collaborative environment where people work together with others to achieve a common goal, knowledge sharing plays a very important role. With the help of knowledge sharing one can get faster access to the information. But to find a person who can give the right knowledge is a challenging part due to variety of information needs. This proposed system finds an expert who provides a most relevant knowledge acquired by them to the user in collaborative environment. When the knowledge mining is integrated with expert search, the accuracy improves as compared to traditional methods. This knowledge sharing system helps to get the exact knowledge in less time and to save a lot of repeating efforts for the same task. Thus, it increases the performance of the system by using efficient techniques.