To guarantee quality of the service, services need to be tested to ensure the service quality. But most of existing testing service can't provide multi-type testing and deploy testing clients concurrently in different regions. To overcome these problems, in this paper, a cloud testing service combine cloud computing and multi-testing tools is proposed. Using the proposed service user can deploy the testing clients in different countries to access the testing targets, when the testing is finish user can easily get both of detail and summarized test results. To show the capabilities of proposed service, an experiment is performed. The results shows that the proposed service can guarantee testing quality, automatically deploy testing clients concurrently in different region, get latency from different countries, and perform press testing.