The cancellation of administrative act is a widespread phenomenon in administrative practice as well as the important contents of the study of administrative law science.

行政行为的撤销是行政实务中的普遍现象，也是行政法学研究的重要内容。

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Based on that, we should understand the result caused by violating administrative procedures in the two aspects such as inefficiency and cancellation.

在此基础上，从违反行政程序而致无效和违反行政程序而致撤销两大方面，来理解违反行政程序的后果。

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The invalidity, cancellation and correction of an administrative behavior is an action taken against an illegal administrative behavior and an remedy of legal duty.

行政行为的无效、撤销和补正是追究违法行政行为补救性法律责任的三种方式。

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