Author analyzed the characters of abnegating of a suit that based on the theories of suit rights.And then the author analyzed its conditions, aftermath and process.

• 摘要该文结合诉权理论分析了放弃诉讼请求在程序上和实体上的性质，在此基础上，进一步分析了放弃诉讼请求有效成立的条件、法律后果和处理方式。