Administrative act belongs to public law act, which bears the characteristics of public welfare, service, subordination to law, one-sidedness, compulsion and procedure.

• 作者分析了行政行为的特征和行政行为效力的特征及内容，认为行政行为是公法行为，具有公益性、服务性、法律从属性、单方性、强制性、程序性。