The invention discloses a baking soda toothpaste, which is prepared by the following raw materials in parts by weight: nanometer sodium bicarbonate powder 67.0-67.2wt%, xylitol 3.0-3.2wt%, polyethylene glycol 1.6-1.8wt%, Calcium pyrophosphate 1.2-1.3wt%, mass concentration is 30% poly(oxypropylene) oleyl ether sodium phosphate 2.8-3.0wt%, sodium alginate 0.2-0.3wt%, guar gum 0.2-0.3wt%, 0.2-0.3wt% of stevia, 0.1-0.11wt% of sodium fluoride, and 4-6wt% of fatty acid alkanolamide borate and potassium phosphate, wherein the weight ratio of fatty acid alkanolamide ester and potassium phosphate is 3- 5:1, and the right amount of essence, the balance of water. The baking soda toothpaste provided by the invention adopts a unique dental-grade baking soda formula, which can inhibit dental plaque, reduce gum swelling and bleeding, relieve gum problems, and strengthen gums and teeth. It can effectively prevent the formation of dental calculus, remove bad breath, and prevent tooth decay. The baking soda toothpaste provided by the invention has stable properties, and long-term storage will not cause the baking soda to decompose.