Based on the research results of the acoustic team of Nanjing University-ultrasonic cavitation technology, the product design, through rational research and analysis, puts forward the experience composition of subversive and innovative single-foot care, combined with the two-way folding structure design, to meet the needs of users in the new era for extreme space storage and beautiful pricing. To create a new foot care machine, set "remove beriberi, kill fungi, remove dead skin, relieve pressure" four core functions in one, so that easy care, easy storage.