耳內式助(zhu)(zhu)聽(ting)(ting)(ting)器(qi)(qi)(qi)(qi)（in-the-ear，ITE），也稱為耳甲腔式助(zhu)(zhu)聽(ting)(ting)(ting)器(qi)(qi)(qi)(qi)。耳內式助(zhu)(zhu)聽(ting)(ting)(ting)器(qi)(qi)(qi)(qi)是(shi)最早開發(fa)應用的(de)定(ding)(ding)制式助(zhu)(zhu)聽(ting)(ting)(ting)器(qi)(qi)(qi)(qi)。它占據耳甲腔和耳甲艇，從解剖學來講，也叫(jiao)耳甲式助(zhu)(zhu)聽(ting)(ting)(ting)器(qi)(qi)(qi)(qi)。其外殼是(shi)根據聽(ting)(ting)(ting)障者的(de)耳甲腔形(xing)狀定(ding)(ding)制的(de)，麥(mai)(mai)克(ke)風(feng)、放大器(qi)(qi)(qi)(qi)和耳機(ji)全部(bu)放在(zai)定(ding)(ding)制的(de)外殼內，外部(bu)不(bu)需要任何導線和軟管，能全部(bu)放在(zai)耳甲艇、耳甲腔和外耳道內，比(bi)較(jiao)隱(yin)蔽輕便。此類助(zhu)(zhu)聽(ting)(ting)(ting)器(qi)(qi)(qi)(qi)的(de)麥(mai)(mai)克(ke)風(feng)入口位(wei)(wei)于助(zhu)(zhu)聽(ting)(ting)(ting)器(qi)(qi)(qi)(qi)外側面，比(bi)起(qi)耳背(bei)式助(zhu)(zhu)聽(ting)(ting)(ting)器(qi)(qi)(qi)(qi)更符合人耳感受聲音的(de)自(zi)然位(wei)(wei)置，耳內式助(zhu)(zhu)聽(ting)(ting)(ting)器(qi)(qi)(qi)(qi)體積(ji)和面板面積(ji)相對(dui)較(jiao)大，使(shi)雙麥(mai)(mai)克(ke)風(feng)技(ji)術較(jiao)易得(de)到應用。