OBJECTIVE： To observe the effects of endotoxin affinity adsorbent SPV on intestinal permeability and bacterial translocation in hemorrhagic shock model rats.  METHODS： Totally 85 male SD rats were randomly divided into normal group （5 rats）， shock group （each 5 rats at each time point， 20 rats in total）， SPV low-dose， medium-dose and high-dose groups （Montmorillonite powder 0.3 g， Polymyxin B sulfate 0.5 mg， Vitamin B6 5 mg dissolved in normal saline to obtain SPV solution 5 mL， as low dose； medium and high dose were 2 or 3 times as high as low dose. Each 5 rats of each group at each time point， 60 rats in total）. Administration groups were given SPV solution intragastrically 5， 10， 15 mL once， respectively； normal group and shock group were given normal saline 5 mL intragastrically once. Thirty minutes after last medication， other groups received femoral artery catheterization and bleeding to induce hemorrhagic shock model， except for normal group. The activities or contents of diamine oxidase （DAO）， endotoxin and D-lactic acid， positive rates of intestinal bacterial translocation were detected in each group at 1， 4， 8， 16 h after recovery. RESULTS： Compared with normal group， the activities of DAO of rats in shock group were enhanced significantly， and the serum contents of endotoxin and D-lactic acid were increased significantly （P＜0.05）. Compared with shock group， the activities of DAO were decreased significantly in SPV groups （at each time point during 1-16 h）； the serum contents of endotoxin and D-lactic acid （at each time point during 1-16 h）， positive rates of intestinal bacterial translocation （SPV low-dose group at each time point during 4-16 h， SPV medium-dose and high-dose groups at each time point during 1-16 h） were decreased significantly （P＜0.05）. Above indexes in SPV medium-dose and high-dose groups （at each time point during 1-16 h） were significantly lower than those of SPV low-dose group （P＜0.05）. There was no statistical significance in above indexes between SPV medium-dose group and high-dose group （P＞0.05）. CONCLUSIONS： The endotoxin affinity adsorbent SPV can improve the permeability of the intestinal wall and inhibit bacterial translocation in hemorrhagic shock model rats in dose-dependent manner. The effects of which may be associated with reducing the activities or contents of serum DAO， endotoxin， D-lactic acid， and down-regulating the positive rate of bacterial translocation.