Objective:To evaluate the value of hysteroscopy combined with transvaginalhydrolaparoscopy(THL)in the diagnosis of infertility.Methods:Twenty three patients with infertility were diagnosed by hysteroscopy and THL.Results:The successful puncture rate is 100% in THL.Hysteroscopic examinations found intrauterine diseases in 15 cases(15/23,65.2%),THL found fallopintube diseases in 2 cases(21/23,91.3%).Conclusion:Hysteroscopy combined with THL is a safe,accurate and minimally invasive method in the diagnosis of infertility patients,and it has important clinical value.