基于Web页面的计算门户提供了简单易用的用户使用界面,这些门户需要访问异构的计算机群。本文研究和实现基于REST风格的科学计算环境Web服务API(SCEAPI-REST),其核心思想是充分利用Web服务在复杂系统中的集成优势以及REST风格的API跨平台和跨编程语言的特性,为开发者提供简单易用的计算机群开发接口,包括用户管理、资源查询、作业管理和文件传输等功能。基于SCEAPI-REST,开发人员不再需要解决机群访问的繁杂问题,只需要专心构建面向科学计算的终端软件。该API已经应用到计算化学、材料科学、生物信息等多个领域的专业社区和工具软件。 Web-based computing portals provide an easy-to-use user interface that requires access to heterogeneous groups of computers. This paper studies and implements SCEAPI-REST based on REST style. Its core idea is to make full use of the integration advantages of Web services in complex systems and the features of RESTful API cross-platform and cross-programming languages. Developers to provide easy-to-use computer group development interface, including user management, resource queries, job management and file transfer capabilities. Based on SCEAPI-REST, developers no longer need to solve the complex problem of fleet access, only need to concentrate on building scientific computing terminal software. The API has been applied to specialized communities and tools in many areas of computational chemistry, materials science, bioinformatics and more.