With the rapid development of science and technology, information technology and computer technology have become popular fields for research and exploration. In the process of computer big data analysis, technicians shall flexibly apply cloud computing technology to improve the level and effect of analysis work. Big data technology is the main direction of future development and can play an active role in analysis work. Adopt big data processing technology to provide strong data support for comprehensive control, management and decision-making. In view of this, this study mainly describes how cloud computing technology can be effectively used in computer big data analysis.