Based on the high-order nonlinear Schr- dinger equation，the propagation of high-order solitons in the anomalous dispersion region of photonic crystal fibers （PCF）is numerically simulated by making use of the split-step Fourier method（SSFM).From pulse shape and spectrum，the influences of the third-order dispersion，self-steepening and intrapulse stimulated Raman scattering on the propagation property of the high-order solitons are analysed.The results show that the high-order effects destroy the periodicity of high-order solitons evolution.Among them，the third-order dispersion and intrapulse stimulated Raman scattering play a leading role in the fission of the high-order solitons.And the high-order effects always broaden the ultima spectrum at different levels.