The chaos laser has received in-depth investigation in recent years owing to its important applications, such as secure communications, fast physical random bit generation, chaotic laser radar, chaotic time domain reflectometer, optical fiber sensing and ranging. The integrated chips have advantages over those setups composed of discrete components for some unique virtues such as smaller size, lower cost, better stability and reproducibility via mass production. Combining with the advantages of the chaotic applications and integrated chips, the integration of chaotic semiconductor laser arises at the historic moment. The integration of chaotic semiconductor laser is divided into five categories to introduce the domestic and oversea research progress of the relevant institutions in the respect of integrated structure, size of the integrated area, features of integration and applications of integrated chaotic laser. Finally, we design a novel butterfly packaging integrated chaotic semiconductor laser with an external-cavity.