【Objective】 To explore the growth of instep and the incidence rate of flatfoot and the kinesis of feet in 2~6 years old children with spastic cerebral palsy. 【Methods】 The study involved 56 in 2~6 years old children with spastic cerebral palsy from the Tianjin Children's Hospital. Footprint was used to observe and classify the insteps, and then counted the incidence rate of flatfoot. Visual method was used to observe the calcaneus and toes, and then counted the incidence rate of calcaneus varus or valgus, hallux varus or valgus,toe plantar flexion or dorsiflexion. 【Results】 Among 56 children, 106 feet were observed. The incidence rate was as follows: 100% for flatfoot, 0% For slight、2.83% for medium、97.17% for maximum,0% for calcaneus varus、0.94% for nomal、99.06% for calcaneus valgus, 100% for ankle plantar flexion, 0.94% for ankle dorsiflexion,100% for toe plantar flexion, 16.98% for toe dorsiflexion, the difference among age wasn't worth(P＞0.05); 0.94% for hallux varus, 5.66% for normal, 93.40% for hallux valgus, the difference among age was worth(P＜0.05). 【Conclusions】 In 2~6 years old children with spastic cerebral palsy, the incidence rate of flatfoot is high, the kinesis of feet is poor. We should pay more attention to it.