耳(er)(er)內(nei)式(shi)(shi)助(zhu)(zhu)(zhu)聽(ting)(ting)器(qi)(qi)(qi)(qi)（in-the-ear，ITE），也稱(cheng)為耳(er)(er)甲腔(qiang)(qiang)(qiang)式(shi)(shi)助(zhu)(zhu)(zhu)聽(ting)(ting)器(qi)(qi)(qi)(qi)。耳(er)(er)內(nei)式(shi)(shi)助(zhu)(zhu)(zhu)聽(ting)(ting)器(qi)(qi)(qi)(qi)是(shi)最早開發應用(yong)的定制式(shi)(shi)助(zhu)(zhu)(zhu)聽(ting)(ting)器(qi)(qi)(qi)(qi)。它占據耳(er)(er)甲腔(qiang)(qiang)(qiang)和耳(er)(er)甲艇(ting)，從解剖學來講，也叫耳(er)(er)甲式(shi)(shi)助(zhu)(zhu)(zhu)聽(ting)(ting)器(qi)(qi)(qi)(qi)。其外(wai)殼是(shi)根據聽(ting)(ting)障者的耳(er)(er)甲腔(qiang)(qiang)(qiang)形狀定制的，麥克風(feng)(feng)、放大器(qi)(qi)(qi)(qi)和耳(er)(er)機全部(bu)放在(zai)定制的外(wai)殼內(nei)，外(wai)部(bu)不需要任何導線和軟管(guan)，能全部(bu)放在(zai)耳(er)(er)甲艇(ting)、耳(er)(er)甲腔(qiang)(qiang)(qiang)和外(wai)耳(er)(er)道內(nei)，比(bi)較(jiao)隱蔽輕便。此類助(zhu)(zhu)(zhu)聽(ting)(ting)器(qi)(qi)(qi)(qi)的麥克風(feng)(feng)入口(kou)位于助(zhu)(zhu)(zhu)聽(ting)(ting)器(qi)(qi)(qi)(qi)外(wai)側面，比(bi)起(qi)耳(er)(er)背式(shi)(shi)助(zhu)(zhu)(zhu)聽(ting)(ting)器(qi)(qi)(qi)(qi)更符(fu)合人(ren)耳(er)(er)感(gan)受聲音的自然位置，耳(er)(er)內(nei)式(shi)(shi)助(zhu)(zhu)(zhu)聽(ting)(ting)器(qi)(qi)(qi)(qi)體積(ji)和面板面積(ji)相對較(jiao)大，使雙麥克風(feng)(feng)技術較(jiao)易得到應用(yong)。