Tubal ectopic hydatidiform mole is an uncommon but very important complication of pregnancy. The clinical manifestation is the same as ectopic pregnancy and in all of the cases management was the same as tubal ectopic pregnancy. We present a case of tubal ectopic pregnancy that after laparotomy and salpingectomy, pathologic examination reported hydatidiform mole within ectopic gestational tissue. So, a high index of suspicious is necessary for prompt diagnosis and correct fallow up of the patient.