選配(pei)助(zhu)(zhu)聽(ting)(ting)(ting)(ting)(ting)器(qi)(qi)(qi)(qi)時最(zui)好去醫院，對聽(ting)(ting)(ting)(ting)(ting)力(li)做一次全面檢(jian)查，用(yong)電(dian)測聽(ting)(ting)(ting)(ting)(ting)等儀器(qi)(qi)(qi)(qi)準確地評價出(chu)耳聾(long)的(de)(de)(de)程度(du)，再選助(zhu)(zhu)聽(ting)(ting)(ting)(ting)(ting)器(qi)(qi)(qi)(qi)，如果當地沒有相應條件的(de)(de)(de)醫院，聽(ting)(ting)(ting)(ting)(ting)力(li)損(sun)(sun)(sun)失(shi)程度(du)與助(zhu)(zhu)聽(ting)(ting)(ting)(ting)(ting)器(qi)(qi)(qi)(qi)功(gong)(gong)率(lv)(lv)的(de)(de)(de)選配(pei)可(ke)按(an)口語試驗(yan)來估計。例如，聽(ting)(ting)(ting)(ting)(ting)不到(dao)(dao)耳語聲(sheng)(sheng)(sheng)的(de)(de)(de)人(ren)聽(ting)(ting)(ting)(ting)(ting)力(li)損(sun)(sun)(sun)失(shi)30～40分貝(bei)(bei)(bei)，聽(ting)(ting)(ting)(ting)(ting)不到(dao)(dao)低小聲(sheng)(sheng)(sheng)的(de)(de)(de)人(ren)聽(ting)(ting)(ting)(ting)(ting)力(li)損(sun)(sun)(sun)失(shi)約40～50分貝(bei)(bei)(bei)，此時宜選購低功(gong)(gong)率(lv)(lv)及(ji)(ji)中功(gong)(gong)率(lv)(lv)助(zhu)(zhu)聽(ting)(ting)(ting)(ting)(ting)器(qi)(qi)(qi)(qi)；聽(ting)(ting)(ting)(ting)(ting)不到(dao)(dao)普(pu)通講話(hua)聲(sheng)(sheng)(sheng)的(de)(de)(de)人(ren)聽(ting)(ting)(ting)(ting)(ting)力(li)損(sun)(sun)(sun)失(shi)約50～60分貝(bei)(bei)(bei)，聽(ting)(ting)(ting)(ting)(ting)不到(dao)(dao)高聲(sheng)(sheng)(sheng)講話(hua)的(de)(de)(de)人(ren)聽(ting)(ting)(ting)(ting)(ting)力(li)損(sun)(sun)(sun)失(shi)60～70分貝(bei)(bei)(bei)，可(ke)選配(pei)中功(gong)(gong)率(lv)(lv)及(ji)(ji)大(da)(da)(da)功(gong)(gong)率(lv)(lv)型助(zhu)(zhu)聽(ting)(ting)(ting)(ting)(ting)器(qi)(qi)(qi)(qi)；聽(ting)(ting)(ting)(ting)(ting)不到(dao)(dao)大(da)(da)(da)聲(sheng)(sheng)(sheng)喊叫(jiao)(jiao)聲(sheng)(sheng)(sheng)的(de)(de)(de)人(ren)，聽(ting)(ting)(ting)(ting)(ting)力(li)損(sun)(sun)(sun)失(shi)70～80分貝(bei)(bei)(bei)，選用(yong)中、大(da)(da)(da)功(gong)(gong)率(lv)(lv)助(zhu)(zhu)聽(ting)(ting)(ting)(ting)(ting)器(qi)(qi)(qi)(qi)；全力(li)喊叫(jiao)(jiao)聲(sheng)(sheng)(sheng)聽(ting)(ting)(ting)(ting)(ting)不到(dao)(dao)的(de)(de)(de)人(ren)聽(ting)(ting)(ting)(ting)(ting)力(li)損(sun)(sun)(sun)失(shi)約約80～90分貝(bei)(bei)(bei)或(huo)更高，可(ke)選配(pei)大(da)(da)(da)功(gong)(gong)率(lv)(lv)及(ji)(ji)特大(da)(da)(da)功(gong)(gong)率(lv)(lv)助(zhu)(zhu)聽(ting)(ting)(ting)(ting)(ting)器(qi)(qi)(qi)(qi)。