Pi Network is a cryptocurrency project aimed at promoting mass participation, featuring an innovative model of 'mobile mining.' This article introduces Pi Node, an application for PC in Pi Mining, starting from the project background and ecological development. As an important part of promoting decentralization, Pi Node supports users in building network nodes on PC, performing transaction verification, and network collaboration. The article also analyzes the association mechanism between Pi Node and the mobile app. They are not mutually exclusive but complement each other in terms of account system and functionality. Through collaboration between desktop and mobile ends, Pi Network establishes a more complete user participation system, laying the foundation for its future ecological expansion and payment integration.