In fact, Amomum villosum is oval or oval, slightly triangular, with a length of 1.5 ~ 2 cm and a diameter of 1 ~ 1.5 cm. The surface is brown, densely spiny, with small protrusions at one end and fruit stalk marks at the other end. The peel is thin, light and crisp, and most seeds are wrapped. The seed ball is spherical or rectangular, obtuse triangle, divided into three petals, each petal contains 6 ~ 15 seeds. The seeds are irregular polyhedrons, about 2 mm in diameter, with brownish red or dark brown surface and fine wrinkles. After being broken, the inside is gray and oily. The breath is sweet and the taste is bitter.