The invention discloses a calcium tablet prepared from prunus humilis bunge. The calcium tablet is prepared from the following raw materials in parts by weight of 30-50 parts of prunus humilis bunge powder, 10-15 parts of milk powder, 5-8 parts of rose petals, 3-5 parts of durian sugar powder, 2-4 parts of pomegranate juice, 3-5 parts of maltodextrin, 3-5 parts of carboxymethyl-beta-cyclodextrin,3-5 parts of rhamnose and a proper amount of water. The preparation method comprises the following steps of S1, crushing rose petals, mixing the crushed rose petals with the prunus humilis bunge powder, the milk powder and the durian sugar powder, performing uniform stirring, and adding a proper amount of water so as to obtain a thick substance A; S2, adding pomegranate juice and rhamnose into thethick substance A, uniformly stirring, drying to prepare a soft material, and cutting into particles B; and S3, mixing maltodextrin, carboxymethyl-beta-cyclodextrin and a proper amount of water to prepare a solution C, soaking in the solution C, taking out, drying and tabletting. The calcium tablet has rich nutritional value, calcium naturally exists in fruits and has no side effect when being eaten, and the addition of the auxiliary materials not only increases the taste, but also enriches the nutrition.