The invention relates to iron-supplementing watermelon seeds and a preparation method thereof. The iron-supplementing watermelon seeds are characterized by being prepared from the following raw materials in parts by weight: 150-160 parts of watermelon seeds, 2-3 parts of 
lotus seed cores, 1-2 parts of white 
gourd peels, 2-2.3 parts of pseudo-
ginseng flower, 1-2 parts of radix achyranthis bidentatae, 1-1.5 parts of cortex acanthopanacis, 2-2.5 parts of large-leaf violet 
herb, 1-2 parts of biden bipinnata, 40-45 parts of beer, 0.2-0.3 part of 
ferrous citrate, 3-4 parts of green bean cake, 5-6 parts of 
pork liver and 30-35 parts of 
nutrition and healthcare liquid. According to the iron-supplementing watermelon seeds, the added 
pork liver is rich in 
nutrition, 
vitamin C and multiple mineral substances and is combined with the 
ferrous citrate to supplement an iron element to a 
human body so as to achieve the purposes of body building and prevention or 
adjuvant therapy of diseases; meanwhile, the fresh 
flavor of the 
pork liver and the fragrant and sweet flavors of the green bean cake are blended to endow the iron-supplementing watermelon seeds with the specific 
flavor; the iron-supplementing watermelon seeds are reasonable in preparation process and simple to prepare, thus being easy to popularize; besides, the iron-supplementing watermelon seeds further have the functions of reducing the blood fat and the 
blood pressure, resisting the cancers and tonifying the liver and the 
kidney.