Objective To investigate the curative effect of using new irrigation pump in acute hematogenous osteomyelitis.Methods Forty patients with acute hematogenous osteomyelitis were divided into the control group and observation group,20 cases in each group.The control group adopted the conventional lavage for drainage,while the observation group used self-made irrigation pump.Then the clinical curative effect and cure time were compared between the two groups.Results The total effective rate in the observation group was 100.00 ％,which was significantly higher than 80.00 ％ in the control group(P＜0.05),and the difference was statistically significant(P＜0.05).The cure time in the observation group was(10.13 ± 8.03)d,which was significantly shorter than (18.14-±5.43)in the control group,and the difference was statistically significant(P＜0.05).Conclusion The curative effect of new type irrigation pump in acute hematogenous osteomyelitis is more acurate than that of conventional lavage for vacuum darianage.