There are Chinese businessmen all over the world. In addition to the Chinese mainland，Hongkong and Taiwan，Southeast Asia is the most important settlement for Chinese businessmen. Most of rich men in Southeast Asia are the descendants of the Chinese. This paper studies the wealth distribution and economic strength of Southeast Asia Chinese businessmen. In view of the difficulty of data collection，this paper adopts the data in Forbes and Hurun Rich List which are public，highly regarded and have high authority.