Objective To compare the effect of different stretching methods on the muscle tension of children with spastic cerebral palsy (CP) and the differences in their tolerance. Methods A total of 53 CP patients, who were treated in Chengdu Women's and Children's Central Hospital from September 2019 to May 2020 and met the inclusion criteria, were randomly divided into observation group (n=27) and control group (n=26).The observation group was given a small range of progressive drafting method, while control group received a large range of static drafting method.Both groups received routine rehabilitation treatment, and were intervened for 12 weeks with the frequency of 30 minutes/time,1 time/day, 5 times/week.The changes of muscle tension in the children were observed by Modified Ashworth Scale(MAS), joint range of motion (ROM) and other indicators before and after the training.The modified CHEOPS pain scoring method was used to observe the changes in children's tolerance. Results After treatment, the muscular tension (MAS) scores of the two groups were lower than those before treatment (control group:t=2.121, 4.947, 2.476; observation group:t=3.422, 5.322, 2.933), the measurement of joint mobility improved compared with that before treatment (control group: t=2.061, 2.017, 2.053; observation group:t=4.357, 3.936, 3.349), and the modified CHEOPS pain score was significantly higher than that before treatment (t=39.817, 16.908,P＜0.05).After treatment, the muscle tension of adductor femoris, hamstrings and ankle plantar flexor of children in the observation group was significantly higher than that in control group (t=2.230, 2.133, 2.173, P＜0.05).The adductor angle, the popliteal angle and the dorsiflexion angle of the foot in the observation group improved more than the control group (t=2.059, 2.119, 2.105,P＜0.05 ),while the improvement of CHEOPS pain score during stretching treatment was more significant in control group(t=13.157, P<0.001). Conclusion Progressive stretching therapy is more effective in improving the muscle tension of children with spastic cerebral palsy, and is more easily accepted by children with high tolerance, so it is suitable for application and promotion in the rehabilitation of children with cerebral palsy.