Objective To establish an animal model to study endometriosis.  Methods Six female Bama miniature pigs that were sexually mature were chosen and their endometrial tissues were acquired surgically. The endometrial tissues were implanted to abdominal cavity and subcutaneous tissues.  Results The ectopic endometria in the implant location formed mass or cyst that was verified pathologically to be similar to normal endometrial tissues.  Conclusion The establishment of ectopic endometriosis in Bama miniature pigs is successful

which provides an ideal model for further therapeutic study of endometriosis.