The invention discloses eggshell calcium malate chewable tablets and a preparation method thereof, belongs to the technical field of functional foods and particularly relates to a method for preparing eggshell calcium malate by utilizing a high-voltage pulsed electric field, and the eggshell calcium malate chewable tablets capable of supplementing calcium required by a human body and a manufacturing method thereof. The method for preparing the calcium malate by utilizing eggshells comprises the following steps: naturally air-drying the eggshells, then crushing, sieving, adding acid, adding water and then performing treatment by the high-voltage pulsed electric field, and the chewable tablets comprise eggshell calcium malate powder, dextrin, starch, xylitol, malic acid, citric acid, magnesium stearate, sodium isoascorbiate and fresh milk essence. The preparation method comprise the following steps: taking the eggshell calcium malate powder as a main functional ingredient, taking the starch, the dextrin, the xylitol, the citric acid, the malic acid, the sodium isoascorbiate, the magnesium stearate and the fresh milk essence as auxiliary materials, performing pretreatment, mixing the materials, granulating, drying, stabilizing the size and tabletting for preparing products. The eggshells are taken as the main raw materials, the high-voltage pulsed electric field is used for treatment and optimization, then the yield of calcium ions in the calcium malate can be as high as 98.34%, the treatment time is short (50 mu s), and the treatment can be performed continuously, thereby being more conductive to industrial production. The eggshell calcium malate chewable tablets have the characteristics and the advantages of delicate mouthfeel, sweet, sour and delicious taste, convenience in taking, high calcium content, significant calcium supplementation effect, difficulty in moisture absorption, simpleness in storage method, long shelf life and the like.