Mashup is one of the technologies which are very popular. It is a kind of new applications based on Web. It could organize the sounds, pictures and texts well, filter the Spam, making the reading clearer and more comfortable. Implementation of PKM (Personal Knowledge Management) is important to reduce one’s loss due to information asymmetry. The abilities of obtain, evaluation, management and express capacity could be improved greatly. This article introduces the definition and significance of Personal Knowledge Management, present what is Mashup and RSS, and the advantages, tools and typical application of Mashup. Last, we select Yahoo Pipes to make a personal news browsing tool with which you could simplify the operation, get together information on different sites to make it convenient to read the news spread all over all the news sites. You may find that it is so simply to get the information.