During the Long March period,the battle of the Central Red Army in Hui-li county of Si-chuan province was an important one.Because casualties were too serious,so many criticisms occurred in the Party or the Red Army.Based on the relevant historical documents,the author thinks the military action taken by the Red Army in Hui-li county had favorable and unfavorable factors.Though the battle didn’t win,it still had positive significance in which the Red Army went north rapidly and broke though the Da Du-he river defence set by the army of Kuomingtang.