選(xuan)(xuan)(xuan)(xuan)配(pei)助(zhu)聽(ting)(ting)(ting)(ting)(ting)(ting)(ting)器(qi)(qi)時(shi)最(zui)好去醫(yi)院(yuan)，對聽(ting)(ting)(ting)(ting)(ting)(ting)(ting)力(li)做一(yi)次(ci)全面檢查，用電測聽(ting)(ting)(ting)(ting)(ting)(ting)(ting)等儀器(qi)(qi)準確地評價出(chu)耳(er)聾的(de)(de)程度(du)，再選(xuan)(xuan)(xuan)(xuan)助(zhu)聽(ting)(ting)(ting)(ting)(ting)(ting)(ting)器(qi)(qi)，如果當地沒有相應條件的(de)(de)醫(yi)院(yuan)，聽(ting)(ting)(ting)(ting)(ting)(ting)(ting)力(li)損(sun)失(shi)程度(du)與助(zhu)聽(ting)(ting)(ting)(ting)(ting)(ting)(ting)器(qi)(qi)功(gong)(gong)(gong)(gong)率(lv)(lv)(lv)的(de)(de)選(xuan)(xuan)(xuan)(xuan)配(pei)可按口語試驗(yan)來估計(ji)。例如，聽(ting)(ting)(ting)(ting)(ting)(ting)(ting)不(bu)(bu)到(dao)耳(er)語聲(sheng)(sheng)(sheng)(sheng)的(de)(de)人聽(ting)(ting)(ting)(ting)(ting)(ting)(ting)力(li)損(sun)失(shi)30～40分(fen)貝，聽(ting)(ting)(ting)(ting)(ting)(ting)(ting)不(bu)(bu)到(dao)低小(xiao)聲(sheng)(sheng)(sheng)(sheng)的(de)(de)人聽(ting)(ting)(ting)(ting)(ting)(ting)(ting)力(li)損(sun)失(shi)約40～50分(fen)貝，此時(shi)宜選(xuan)(xuan)(xuan)(xuan)購(gou)低功(gong)(gong)(gong)(gong)率(lv)(lv)(lv)及(ji)中功(gong)(gong)(gong)(gong)率(lv)(lv)(lv)助(zhu)聽(ting)(ting)(ting)(ting)(ting)(ting)(ting)器(qi)(qi)；聽(ting)(ting)(ting)(ting)(ting)(ting)(ting)不(bu)(bu)到(dao)普通講(jiang)話聲(sheng)(sheng)(sheng)(sheng)的(de)(de)人聽(ting)(ting)(ting)(ting)(ting)(ting)(ting)力(li)損(sun)失(shi)約50～60分(fen)貝，聽(ting)(ting)(ting)(ting)(ting)(ting)(ting)不(bu)(bu)到(dao)高(gao)聲(sheng)(sheng)(sheng)(sheng)講(jiang)話的(de)(de)人聽(ting)(ting)(ting)(ting)(ting)(ting)(ting)力(li)損(sun)失(shi)60～70分(fen)貝，可選(xuan)(xuan)(xuan)(xuan)配(pei)中功(gong)(gong)(gong)(gong)率(lv)(lv)(lv)及(ji)大功(gong)(gong)(gong)(gong)率(lv)(lv)(lv)型助(zhu)聽(ting)(ting)(ting)(ting)(ting)(ting)(ting)器(qi)(qi)；聽(ting)(ting)(ting)(ting)(ting)(ting)(ting)不(bu)(bu)到(dao)大聲(sheng)(sheng)(sheng)(sheng)喊叫聲(sheng)(sheng)(sheng)(sheng)的(de)(de)人，聽(ting)(ting)(ting)(ting)(ting)(ting)(ting)力(li)損(sun)失(shi)70～80分(fen)貝，選(xuan)(xuan)(xuan)(xuan)用中、大功(gong)(gong)(gong)(gong)率(lv)(lv)(lv)助(zhu)聽(ting)(ting)(ting)(ting)(ting)(ting)(ting)器(qi)(qi)；全力(li)喊叫聲(sheng)(sheng)(sheng)(sheng)聽(ting)(ting)(ting)(ting)(ting)(ting)(ting)不(bu)(bu)到(dao)的(de)(de)人聽(ting)(ting)(ting)(ting)(ting)(ting)(ting)力(li)損(sun)失(shi)約約80～90分(fen)貝或更高(gao)，可選(xuan)(xuan)(xuan)(xuan)配(pei)大功(gong)(gong)(gong)(gong)率(lv)(lv)(lv)及(ji)特大功(gong)(gong)(gong)(gong)率(lv)(lv)(lv)助(zhu)聽(ting)(ting)(ting)(ting)(ting)(ting)(ting)器(qi)(qi)。