Abstract: Objective To compare the differences in plantar kinetics during walking between male older and male adults, and to explore the influences of aging on plantar kinetics of older people. Methods In-shoe plantar sensory measurement systems was employed to collect the left foot parameters which concluded contact time, beginning of contact in percentage of roll over process (%ROP), and end of contact in ROP%, peak pressure, instant of peak pressure in %ROP, maximum mean pressure, pressure-time integral, maximum force, instant of maximum force in %ROP, mean force and force-time integral of both healthy older and young adults. Results Beside media arch, the contact time on all regions of older people was longer, whereas, the beginning of contact in %ROP on lateral heel, lateral arch was later, and the end of contact in %ROP on medial heel and 2nd- 3rd metatarsal head was earlier compared with young adults. The maximum force and mean force on the whole foot region, and the maximum mean pressure and maximum force on 2nd- 3rd metatarsal head of older people were significantly lower; The pressure-time integral on the whole foot region, the 4th-5th metatarsal head, and the 2nd -5th toes, and the force-time integral on the whole foot region, medial heel, lateral heel and 2nd -5th toes were significantly higher compared with young adults. Conclusions The changing of stance time and the %ROP on foot regions, and the weight bearing on lateral forefoot during foot clearance phase of tandem walk caused the worse postural control of the older people.