選(xuan)配助(zhu)聽(ting)(ting)(ting)(ting)器(qi)時最好去醫(yi)院，對聽(ting)(ting)(ting)(ting)力(li)(li)做一次全面檢查，用(yong)電測聽(ting)(ting)(ting)(ting)等儀器(qi)準確地評(ping)價出耳聾的(de)(de)(de)程度(du)，再選(xuan)助(zhu)聽(ting)(ting)(ting)(ting)器(qi)，如果當地沒(mei)有(you)相應條件的(de)(de)(de)醫(yi)院，聽(ting)(ting)(ting)(ting)力(li)(li)損(sun)(sun)失(shi)(shi)(shi)程度(du)與(yu)助(zhu)聽(ting)(ting)(ting)(ting)器(qi)功(gong)率(lv)(lv)的(de)(de)(de)選(xuan)配可(ke)按口語(yu)試驗來估計。例如，聽(ting)(ting)(ting)(ting)不到(dao)(dao)耳語(yu)聲(sheng)的(de)(de)(de)人(ren)(ren)(ren)聽(ting)(ting)(ting)(ting)力(li)(li)損(sun)(sun)失(shi)(shi)(shi)30～40分貝(bei)，聽(ting)(ting)(ting)(ting)不到(dao)(dao)低小聲(sheng)的(de)(de)(de)人(ren)(ren)(ren)聽(ting)(ting)(ting)(ting)力(li)(li)損(sun)(sun)失(shi)(shi)(shi)約(yue)40～50分貝(bei)，此時宜選(xuan)購(gou)低功(gong)率(lv)(lv)及(ji)中功(gong)率(lv)(lv)助(zhu)聽(ting)(ting)(ting)(ting)器(qi)；聽(ting)(ting)(ting)(ting)不到(dao)(dao)普通講(jiang)話聲(sheng)的(de)(de)(de)人(ren)(ren)(ren)聽(ting)(ting)(ting)(ting)力(li)(li)損(sun)(sun)失(shi)(shi)(shi)約(yue)50～60分貝(bei)，聽(ting)(ting)(ting)(ting)不到(dao)(dao)高聲(sheng)講(jiang)話的(de)(de)(de)人(ren)(ren)(ren)聽(ting)(ting)(ting)(ting)力(li)(li)損(sun)(sun)失(shi)(shi)(shi)60～70分貝(bei)，可(ke)選(xuan)配中功(gong)率(lv)(lv)及(ji)大(da)(da)(da)功(gong)率(lv)(lv)型助(zhu)聽(ting)(ting)(ting)(ting)器(qi)；聽(ting)(ting)(ting)(ting)不到(dao)(dao)大(da)(da)(da)聲(sheng)喊(han)叫(jiao)聲(sheng)的(de)(de)(de)人(ren)(ren)(ren)，聽(ting)(ting)(ting)(ting)力(li)(li)損(sun)(sun)失(shi)(shi)(shi)70～80分貝(bei)，選(xuan)用(yong)中、大(da)(da)(da)功(gong)率(lv)(lv)助(zhu)聽(ting)(ting)(ting)(ting)器(qi)；全力(li)(li)喊(han)叫(jiao)聲(sheng)聽(ting)(ting)(ting)(ting)不到(dao)(dao)的(de)(de)(de)人(ren)(ren)(ren)聽(ting)(ting)(ting)(ting)力(li)(li)損(sun)(sun)失(shi)(shi)(shi)約(yue)約(yue)80～90分貝(bei)或更高，可(ke)選(xuan)配大(da)(da)(da)功(gong)率(lv)(lv)及(ji)特大(da)(da)(da)功(gong)率(lv)(lv)助(zhu)聽(ting)(ting)(ting)(ting)器(qi)。