The main gate of Meishan San Su Shrine Museum is located at the southernmost end of the hall. It was built in the 17th year of the Republic of China (1928). The gate faces south with a single-eave gable and hip roof covered with plain semicircle-shaped tiles. There are several pillars in the south, a hall in the middle, and one wing chamber in the east and west. It has a width of 13.15 meters, a depth of 3.3 meters, a porch width of 1.8 meters, a total height of 6.95 meters, and a building area of 70 square meters. The plaque of "Ancestral Temple of the Three Sus" hangs in the center of the lintel.