"Piggy Savings Design"-a fun and educational savings tool for children. Piggy-shaped chargers bind mobile phone accounts and make digital savings through traditional coin-operated forms to visually display savings progress. Set goals and track progress through mobile phone applications, enjoy the learning process through interactive savings experience, and witness the growth of piglets from "thin" to "round. Through this innovative design, we aim to stimulate children's concept of saving money, cultivate saving habits, so that children learn to save and set goals in joy.