The invention relates to a functional natto chewable tablet and a production process thereof and belongs to the technical field of deep processing of agriculture products. The production process is characterized by comprising the following steps: by taking fresh embryo soybeans rich in gamma-aminobutyric acid (GABA) as a raw material, inoculating bacillus subtilis, fermenting to prepare natto, performing freezing-drying, milling, adding apple powder, tomato powder, kiwi fruit powder, compounding, preparing a soft material, pelleting, drying, tabletting, sterilizing and packaging, thereby obtaining the functional natto chewable tablet which is bright yellow in color and crispy and tasty. The production process is simple, the industrialization degree is high, the production cost is low, the natto taste is slight, and the GABA is further enriched while nattokinase is formed in the natto fermentation process. The functional natto chewable tablet provided by the invention has the functions of reducing the blood pressure, improving the brain function, preventing convulsions, preventing and treating epilepsy, and the like, can excite the nattokinase in blood, can dissolve thrombus, prevent and treat cardiovascular and cerebrovascular diseases, and is a casual healthcare food.