Japan Society of Mammalian Ova Research (JSMOR) aimed at improvement of quality of the embryologist engaged in assisted reproductive technology (ART) to have a large role for infertility treatment and started an authorization system of embryologist in JSMOR from April, 2002. We analyzed it about 455 embryologists whom we authorized as the embryologist of ART till now. A woman accounted for 78.7% in sexuality. By age distinction, the range of 25–29 years old was the most (43.3%). By analysis of last educational background of an embryologist, a graduate of university accounted for most 37.1%. The embryologist who acquired a degree was 18.9%. One to two years of the engagement period in the ART laboratory was the most (43.1%). The duty area had most Kanto area (31.9%). A type of duty institution was the most clinics (60.6%). The actual situation of embryologist became clear by this report. Embryologist deals with gamete and embryo directly and requires are much knowledge of ART, trained skill, high ethicality and dignity. A public authorization system is good for such embryologist. It is thought that an authorization system leads to improvement of social status of embryologist.