The invention relates to the technical field of food processing, in particular to food solidification powder applicable to people suffering from dysphagia. The food solidification powder comprises rice, maize, xanthan gum, Arabic gum, microcrystalline cellulose and maltodextrin. The invention further discloses a preparation method of the food solidification powder. The food solidification powder can be added into various cold and hot drinks/foods such as water, juice, milk and soup, and is capable of reducing aspiration danger of the patients and unnecessary gastric tube insertion, ensuring water intake and beneficial to recovery of a swallowing function of the patients, thereby being applicable to the patients suffering from the dysphagia caused by stroke.