Abstract: The hypothesis of preliminary research stated that the
high rate of divorcement in West Sumatera was caused by the
weakness of the role and function of Badan Penasihatan
Pembinaan dan Pelestarian Perkawinan (Board of Marriage
Advisory and Preservation) or BP4 in every district in providing
premarital counseling service, thus prospective couples have not
enough marital knowledge to work on their households. The aim
of the research is to reveal the effectiveness of premarital
counseling service on the harmony of marriage in realizing
family resilience in West Sumatera.The research applied the
mixed research method by using sequential explanatory design
model. The research object included first, the prospective
husbands/wives who had been provided premarital counseling
service by the BP4 in West Sumatera, and second, the coaches
and counselors of the BP4 premarital counseling service in West
Sumatera.The results showed that, first, the effectiveness of
premarital counseling service on the harmony of marriage
reached as high as 3% in Pariaman, and as low as 0.1% in Pesisir
Selatan; second, the effectiveness of premarital counseling
service on family resilience had as high as 4.5% in Lima Puluh
Kota district, and as low as 0.1 % in Pesisir Selatan; and third,
the role of the BP4 in West Sumatera was, in fact, very low.