PROBLEM TO BE SOLVED: To provide an ultrasonic endoscope and a method for its assembly, where a flexible base material is made to securely have contact with an FPC connector so that the flexible base material may be easily inserted into an inner duct of the endoscope.SOLUTION: An insulating sheet for thickness adjustment is placed between each flexible base material and the FPC connector slider in order to make the conductive wire pattern on the flexible base material securely come into contact with an FPC connector contact part.COPYRIGHT: (C)2011,JPO&INPIT【課題】フレキシブル基板とFPCコネクタを確実に接触させ、かつ、フレキシブル基板を内部管路に容易に挿通させることが可能な超音波内視鏡及びその組立方法を提供する。【解決手段】フレキシブル基板とFPCコネクタのスライダとの間に、該フレキシブル基板の導線パターンとFPCコネクタの接触部を確実に接触させる厚さ調整用の絶縁体シートを介在させた。【選択図】図7