A: The main component of mirabilite is Na2SO4 10H2O. After entering the gastrointestinal tract, it produces a large number of sulfate ions, which are not easily absorbed by intestinal mucosa, and accumulate in the intestinal cavity, which increases the osmotic pressure in the intestinal cavity, and the water in the body transfers to the intestinal cavity, which leads to the expansion of the intestinal internal volume, mechanical stimulation to the intestinal wall, promotion of intestinal peristalsis and diarrhea. Hemp seed is rich in fatty oil, which can lubricate intestinal contents and intestinal wall. At the same time, fatty oil can be transformed into fatty acid that stimulates intestinal wall, which can increase the peristalsis and secretion of intestinal glands, reduce the absorption of water by intestinal tract and produce laxative effect.