Theprofilemethodistheprincipalmethodfirsttobechosentomeasuretheapparentopticalparametersofwaters.Thispaperfirstintroducestheprofilemethodbriefly,thenmodifiestheappliedalgorithminthelightofthepropertiesoftheclass-Ⅱwatersandlastly,analysestheeffectofapplication.