The influence of the administration of BioR preparation in on some indices of sperm quality, spawn fertilization ability and early embryo development of carp under the conditions of in vitro fertilization was studded. During the experiment there have been chosen ordinary carp (males and females at the age of 5-6 years) used in carp artificial reproduction sector. The injection of BioR to reproductive carp in the period of preparation for artificial reproduction contributed to: - a significant increase of sperms longevity after collection; - moderate improvement of seminal cells mobility after collection in the experimental group by 5.53 % versus the control group – administration of BioR in carp genitors (males an females) favors in vitro fertilization results by improving functional indices of the seminal material, as well as spawn biological value, viability and development capacity of early embryos. The best results of spawn fertilizations ability, viability and development capacity of early embryos have been registered in the third experimental groups, where have been used sexual cells from the males and females treated with BioR.