Compare affect in the acide-bazo and power solutions of Transfusion tetraspan 6 percent with Transfusion voluven 6 percent. Objects and methods: Include 60 patents had been transferred one of 2 categories Transfusion tetraspan or voluven with 30ml/kg at BC}/ch Mai hospital. Result : pH, HCO3, BE out the group transferred tetraspan to change is not during in the group transferred voluven reduces meaningful statistics. SID in 2 group will reduce meaningful statistics and out of the group transferred tetraspan reduces less than. AG out the group transferred tetraspan reduces meaningful statistics, but the group transferred voluven reduces do not have meaningless statistics. That state augmented CI- out at the same time score after transferred expired Transfusion HES but not out in the limit to allow and out of the group transferred tetraspan augmented less than. That state reduces Ca2+ . In 2 Group meaningful statistics and out of the group transferred tetraspan reduces less than voluven 6 percent. Conclusion: The influence in acid-bazo, BE, Hematocrite when use tetraspan 6 percent is less than voluven 6 percent.