Abstract: Security is the primary factor to select cloud as the platform. Security threat like man in the middle attack, SQL injection, IP Spoofing increases threats in the system. The existing systems focus on performance than the security of the system. The proposed system with multi cloud application increases the security of the application with Threat Prevent Routing mechanism. Security Check Cloud for security check and Secure App cloud for the secure application. There is Pass Code named Application id is generated in the SC Cloud based on the application run in the client environment to the SA cloud using incident App. The Pass code is the authentication to enter in to the SA cloud and run the Secure App.