This subject provides the introduction of the progress on reproductive technology in farm animals in recent years through reference reviewing. The contents of the subject includes: Advanced artificial control of estrus and breeding, including estrus synchronization and control of ovulation timing. Control of breeding in seasonal breeders out of season particularly in sheep and goat. Advanced production of embryos in vitro including maturation and fertilization of oocytes, and culture of embryos until blastocyst stage. Advanced cryopreservation of semen and embryos, development of vitrification method out of conventional slow freezing method. Sexing of spermatozoa and embryos including the application of flowcytometry and PCR techniques. Advanced manipulation and transplantation of embryos. Cloning of farm animals mainly the nuclear transfer and associated problems after cloning.