耳(er)內(nei)(nei)式(shi)(shi)(shi)(shi)(shi)助(zhu)(zhu)聽(ting)(ting)器(qi)(qi)(qi)（in-the-ear，ITE），也稱(cheng)為耳(er)甲腔(qiang)(qiang)式(shi)(shi)(shi)(shi)(shi)助(zhu)(zhu)聽(ting)(ting)器(qi)(qi)(qi)。耳(er)內(nei)(nei)式(shi)(shi)(shi)(shi)(shi)助(zhu)(zhu)聽(ting)(ting)器(qi)(qi)(qi)是最(zui)早開(kai)發應用(yong)的定(ding)制式(shi)(shi)(shi)(shi)(shi)助(zhu)(zhu)聽(ting)(ting)器(qi)(qi)(qi)。它占據(ju)耳(er)甲腔(qiang)(qiang)和(he)(he)(he)耳(er)甲艇，從(cong)解剖學來講(jiang)，也叫耳(er)甲式(shi)(shi)(shi)(shi)(shi)助(zhu)(zhu)聽(ting)(ting)器(qi)(qi)(qi)。其外殼是根據(ju)聽(ting)(ting)障者的耳(er)甲腔(qiang)(qiang)形狀定(ding)制的，麥(mai)克(ke)(ke)風(feng)(feng)、放大(da)器(qi)(qi)(qi)和(he)(he)(he)耳(er)機全部放在定(ding)制的外殼內(nei)(nei)，外部不需要任何導線和(he)(he)(he)軟(ruan)管，能全部放在耳(er)甲艇、耳(er)甲腔(qiang)(qiang)和(he)(he)(he)外耳(er)道內(nei)(nei)，比(bi)較(jiao)隱蔽輕(qing)便。此(ci)類(lei)助(zhu)(zhu)聽(ting)(ting)器(qi)(qi)(qi)的麥(mai)克(ke)(ke)風(feng)(feng)入口位(wei)于助(zhu)(zhu)聽(ting)(ting)器(qi)(qi)(qi)外側面，比(bi)起耳(er)背式(shi)(shi)(shi)(shi)(shi)助(zhu)(zhu)聽(ting)(ting)器(qi)(qi)(qi)更符合人耳(er)感受聲(sheng)音的自然(ran)位(wei)置，耳(er)內(nei)(nei)式(shi)(shi)(shi)(shi)(shi)助(zhu)(zhu)聽(ting)(ting)器(qi)(qi)(qi)體積和(he)(he)(he)面板面積相對較(jiao)大(da)，使雙(shuang)麥(mai)克(ke)(ke)風(feng)(feng)技術較(jiao)易得到應用(yong)。