The invention discloses a process for preparing meat ball soup. The process comprises the following processing steps, wherein the pork bone soup is soup-stock decocted by pork bone and pigskin in common; freezing into a soup-stock ice block after cooling the soup-stock; mincing pork lean with the pigskin in the soup-stock into meat paste; blending the meat paste according to the ratio of the formula; putting 1/2 of required soup-stock ice block and the prepared meat paste into a beating drum and evenly beating for 15-20 minutes; adding starch and residual soup-stock ice block to the beating drum and continuously beating into fine and viscous paste, and then discharging and pickling; preparing the picked material into the meat ball, putting into hot water for cooking, fishing out and cooling, and quickly freezing. The preparation process disclosed by the invention is simple, the elasticity and delicious taste of the meat ball can be kept under the condition that a food additive is not added, and the meat ball soup contains collagen, has the effects of maintaining beauty and keeping young, and is a true nutritious and delicious green food.