An observation module of an endoscope is arranged at the front end of the endoscope. The observation module is provided with a body, a plug-in area is provided on the surface, and a circuit slot is provided at the edge of the plug-in area, but is not limited to one. The plug-in area and the circuit slot are distributed along the surface of the main body in a 3D axial direction； the number of chips and lens components corresponding to the plug-in area are arranged in the plug-in area； the signal circuit line corresponding to the circuit slot, It is filled in the circuit slot； and the chip, the signal circuit line and the lens assembly are connected to the circuit； accordingly, it replaces the conventional mode of combining the flexible circuit board with the bracket, which can make the volume smaller and the processing more convenient. It is also easy to make observation modules with multiple observation angles.一種內視鏡之觀測模組，係設於內視鏡的前端，該觀測模組設有一本體，在表面設有一插件區域，並在該插件區域邊緣設有但不限於一條的電路槽，該插件區域及電路槽沿著本體的表面高低起伏而呈3D軸向分佈；與插件區域相對應的數目的晶片及鏡頭組件，係設置於插件區域內；與該電路槽相對應的訊號電路線，係填設於電路槽上；並使晶片、訊號電路線及鏡頭組件產生電路聯結；據此，取代了習用的以支架結合軟性電路板的模式，能使體積更小、加工更為方便，同時也容易製作多觀測角度的觀測模組。
