Amnat Boonrod was born in the Ayutthaya province where he started Muay Thai training at the age of 14 by himself.
A year later he joined the Kiatbandit camp in Bangkok and made his debut at Lumpinee Stadium winning by knockout in the second round.
He holds wins against notable fighters such as Nongkhai Sor.Prapatsorn, Jocky Sitkanpai, Ruengsak Porntawee, Khunponnoi Kiatsuriya, Sagat Petchyindee, Vicharnnoi Porntawee, Jitti Muangkhonkaen, and Toshio Fujiwara.
[2] On March 12, 1977, in Los Angeles Narongnoi faced famous American kickboxer Benny Urquidez for the WKA world title.
This came after Narongnoi had scored a flash-knockdown which provoked a riot among fans in the audience who invaded the ring before the end of the fight.