Abstract: We reported a case, the right ovarian ovulation and left fallopian tube ectopic pregnancy following the left ovarian ovulation and intrauterine pregnancy after left fallopian tube resection. This rare condition may be due to the fertilized-egg migration, the endometrial reversal movement, the offistula formation after fallopian tube resection and others. Realistically, pregnancy is a complex physiological process. In the case of monitoring follicles by B ultrasound, some rare conditions should be considered, such as the ectopic pregnancy of contralateral ovulation and the intrauterine pregnancy after tubal resection, to avoid the missed diagnosis. 

Key words: Ovulation induction；, Pregnancy, tubal；, Salpingectomy；, Ultrasonography；, Pregn；, Case reports