The invention discloses a noodle suitable for diabetes patients. The noodle is composed of the following raw materials in parts by weight: 40 to 50 parts of whole wheat, 30 to 40 parts of brown rice, 40 to 50 parts of cowpea, 30 to 40 parts of black soya bean, 20 to 25 parts of onion, 10 to 15 parts of green pepper, 20 to 25 parts of quail meat, 20 to 30 parts of mushroom, 20 to 30 parts of pumpkin, 1 to 2 parts of white clover herb, 1 to 2 parts of lithospermum, 1 to 3 parts of neocheiropteris palmatopedata stem, 1 to 2 parts of madder root, 1 to 2 parts of noodle additive and a proper amount of water. The preparation method takes whole wheat, brawn rice, cowpea, and black soya bean as the main materials; wherein the brown rice has a sweet taste and a warm character, and has the functions of fortifying the spleen, nourishing the stomach, tonifying the middle and qi, harmonizing the five internal organs, tranquilizing the nerve, and promoting the digestion and absorption; the cowpea has the functions of regulating the middle, tonifying qi, invigorating the stomach, tonifying the spleen, harmonizing the five internal organs, maintaining beauty, nourishing the body, generating energy, relieving diabetes, treating puke and diarrhea, and removing toxicity, moreover the phosphatide in the cowpea can promote the insulin secretion and joins the glycometabolism, so the cowpea is an ideal food for diabetes patients; the onion has the function of dissipating wind cold, promoting the secretion in the stomach, intestines and digestive tracts, promoting the digestion, reducing the blood pressure and the blood sugar, and preventing the thrombus formation, and has a certain refreshing function; the mushroom has the functions of preventing constipation, promoting toxicity discharge, preventing diabetes and colorectal cancer, and reducing cholesterol content.