Mr. Son Seay was born in Bangkoung village, Ampel commune , Siem Reap town, and aged 18 years old and studied grade 12 at Svay Thom high school. Moreover, on 2012, he attended the advanced democracy seminar (ADS training) which organized by Youth Council of Cambodia (YCC). He has volunteered with YCC as a Youth President Club of United Youth for Development. In behalf of youth club, he led the club activities to conduct many events such as public forum about violent in family, women right, gender, important of environment and volunteerism.