行政調查，乃行政機關為達特定行政目的或作成行政決定，而為之蒐集資料行為，其進行之過程，因可能造成人民基本權利之侵害，故其應遵守如何之正當法律程序，即有討論之必要。
又行政調查程序與刑事程序息息相關，蓋因二者雖可能各自獨立進行，但亦可能同時進行，更有於行政調查程序中發現刑事犯罪嫌疑，進而有開啟刑事偵查程序必要之情，二者時常難以斷然劃分。
然現行法制上及實務上時有為規避刑事訴訟法關於證據取得之嚴格程序要求，而假借行政調查程序以進行刑事犯罪證據蒐集之情，此時，該等證據應如何適用於刑事程序中，在刑事審判中應如何予以評價，即至關重要，現行法及制度，實有重新審視之必要。
為此，本文將審視現行行政法規及現行實務運作，整理現行法制之問題，並提出建議之發展方向，以達防免執法人員以行政調查之方式蒐集證據，而規避刑事偵查嚴格取證規範之目的。
The administrative inspection is an administration agency engaged in the activities of collecting data in order to fulfill specific propose or make decision of the administrative goal.
However, it could be harmful to fundamental right of the people in the process of administrative inspection. So, it is necessary to discuss what kind of due process should it comply with.
Moreover, administrative inspection and criminal investigation is intimately related ,even though it might be execute separately ,but it also can be execute simultaneously.
If there is any criminal suspicion being detection in the process of administrative inspection, it is also essential to start the criminal investigation.
The phenomenon above also blur the line between administrative inspection and criminal investigation.
In the current legal system and the Judicial Practices, it is frequent that the administration agency employs the administrative inspection to collect evidences and circumvent the strict criterion in criminal procedure law.
In the meantime, it is significant how those evidences to be evaluate in the criminal process
So, it is necessary to examine the current legal system and the Judicial Practices.
In this respect, this thesis will examine the existing administrative regulations and the current Judicial Practices, organize the problems of the existing legal system, and put forward the recommendatory direction of development, in order to attain the purpose of preventing the law enforcement officer employs the administrative inspection to collect evidences and circumvent the strict criterion in criminal investigations.
