The purpose of this study was to investigate and analyze the building process and characteristics of Suncheon American missionary compound-missionary dwellings, medical clinics, schools and churches, for the sake of giving fundamental facts to the researcher of this field. The results of the study is summarized as follows. The construction participants of Suncheon missionary architecture are American supervisor- Rev. Preston, Elder Swinehart and Doctor Timmons, Korean christian labors, Chinese masons and Japanese carpenters. The characteristics of architectures are described as the space composition according to American life style, the architectural form of American colonial style. And also the masonry structure using the Korean domestic stones and bricks and imported various materials- such as the cements, timbers, glasses, doors and windows, etc- from the North America.