The currently proposed network sensitive data transmission methods are difficult to cope with complex network threats during the transmission process,and there is a risk of privacy leakage.To address the aforementioned issues,a new method for secure transmission of network sensitive data based on cloud computing has been studied.Establish a network topology architecture,collect and analyze sensitive data,use encryption algorithms,identity authentication,and access control to establish a comprehensive security mechanism.By introducing trusted computing technology,strengthen secure communication between the cloud and terminals,and achieve secure transmission.The experimental results show that the secure transmission method of network sensitive data based on cloud computing can effectively respond to network threats,reduce leaked data during transmission,and improve transmission security.