IC industry has made great progress in the recent years. However, restricted by the funds and budget, resources of IC design and test are imbalanced. This paper describes an architecture of Cloud-EDA Platform based on Cloud Computing, which is the most popular topic of the internet and IT industry for its high flexibility and low cost. According to the proposed architecture, we design the prototype of Cloud-EDA Platform and develop an application of test-pattern-conversion, which demonstrate that cloud computing can be combined with IC industry to enable ordinary users, app developers and EDA vendors to achieve a win-win-win result.