Using the Children's Hope Scale (CHS), this paper studied 2013 survey data of left-behind children from 30 elementary and middle schools in Hunan. The results indicated that there were four classes of hope, namely high hope group(HH), high hope but be afraid of difficulties group(HHAD), average hope group(AH) and low hope group(LH). The proportion of HH, HHAD, AH, LH was 7.2%, 37%, 29.3% and 26.5%, respectively. Further analyses find that compared with LH, HH, HHAD and AH had no significant gender effects but significant grade effect...