Benzyl alcohol and meta-cresol boiling point's are not so different, the fractional distillation will be very difficult, what can i do for separate this two composites ?
Your observation on the boiling points is correct.
Take a look at the melting points instead: the m.p. of benzyl alcohol is -15 °C, while the m.p. of m-cresol is 11 °C. You might want to cool down the mixture and see whether you can see some enrichment.