The invention discloses bacca sedge instant noodles. The bacca sedge instant noodles are prepared from raw materials in parts by weight as follows: 100-150 parts of flour, 30-50 parts of bacca sedge powder, 10-15 parts of soybeans, 8-10 parts of vitamin E, 3-5 parts of baking soda, 3-5 parts of table salt and a proper amount of water. A preparation method of the bacca sedge instant noodles comprises steps as follows: soybean milk grinding, kneading, dough leavening, forming and packaging. Bacca sedge is added to the instant noodles, and the defect of shortage of vitamin B elements and amino acids in the instant noodles is overcome. The bacca sedge instant noodles prepared with the method have the advantages of comprehensive nutrition, convenience in eating and the like.