| Objective:To observe the effect of HANS in labor analgesia comparedwith PCEA. Method:120 pregnant women were randomly divieled into 4 groups.:Group I with HANS;group II with PCEA,;group III with HANS+PCEAand group Ⅳ for control. Results:Pain in group I decreased 32%deducing by VAS Scoring,which was significantly effective them group Ⅳ(P<0.0s),but less efficacious then group II and group Ⅲ (P |