Objective: To analyze the effects of different interference modes on standing posture control from both linear and nonlinear angles so as to explore the regulation and control strategy of human standing stability. Methods: Sixteen healthy male subjects were recruited and stood normally for 30 seconds, standing with closed eyes, standing on foam pad and standing on foam pad with closed eyes. The linear and nonlinear characteristics of plantar pressure center trajectory when standing with different interference factors were analyzed by spatio-temporal parameters, trajectory approximate entropy and wavelet transform. Visual × Proprioceptive repeated measures ANOVA was used to compare the differences in spatiotemporal parameters, complexity and frequency domain characteristics of the plantar pressure center trajectory under interference conditions (visual interference, proprioceptive interference both visual and proprioceptive interference) and normal standing conditions. Results: In the linear index, the track length, track rate and C90 area of plantar pressure center in closed-eye standing, unstable standing and closed-eye unstable standing were all higher than those in normal standing (p < 0.05). The average offset of C90, direction of MP and AP in the three interference modes had no significant change compared with normal standing (p > 0.05). In the nonlinear index, in the MP and AP directions, there was no significant difference in the approximate entropy between the closed-eye standing, unstable standing and closed-eye unstable standing compared with the normal standing pressure center track (P > 0.05). In the MP direction of the frequency domain index, visual interference increased the energy weight of the intermediate frequency, low frequency and sub-low frequency bands (p < 0.05), and decreased the ultra-low frequency energy weight (p < 0.05). The energy weight of the three frequency bands during proprioceptive interference was not different from that of normal standing (p > 0.05), while the energy weight of intermediate frequency, low frequency and sub-low frequency increased (p < 0.05), while that of ultra-low frequency decreased (p < 0.05). In the AP direction of frequency domain index, the sub-low frequency energy decreased (p < 0.05) and ultra-low frequency energy increased (p < 0.05) after visual interference compared with normal standing. The energy weights of intermediate frequency, low frequency and sub-low frequency of proprioceptive interference, visual and proprioceptive interference increased (p < 0.05), while that of ultra-low frequency decreased (p < 0.05). Conclusion: For healthy people, the closed-loop control mechanism of lower frequency band is dominant when standing, and the interference of external signal input will not change the complexity of the track of standing plantar pressure center, in which visual information interference has obvious effect on coronal axis, proprioceptive information interference has obvious effect on sagittal axis, and when standing is disturbed, the energy weight of higher frequency band of open-loop control mechanism increases. The shaking range and speed of the body become larger.