Born in Sisaket, northeastern Thailand, in 1917, Kosolawat entered Silpakorn University in Bangkok in 1936 to study painting. After graduation, he undertook a teaching position at Poh Chang University and became the chairman of the Thai Art Association. Drawing on the foundation of the traditional Thai culture and the spirit of Eastern art, he blended Western painting techniques into his works of art. Kosolawat is the representative painter of Realism in Thailand. The style of his works sits between realistic and freehand. He specializes in watercolor and oil painting to depict country scenery in Thailand, daily life, and Buddhist temples. With a solid brushwork and a unique spatial layout, he conveys a real, unconventionally flat, and utopian tranquility of the country. His works have been included in the collection of the Museum of Contemporary Art in Bangkok. He has also received the National Art Exhibition Award for three consecutive years.