Research conclusions: This paper gives the advices that the scale of intercity rail transit network for Pearl River Delta Region should be estimated with demand analysis method，the optional plans should be worked out according to the city and town arrangements and the space structure of Pearl River Delta Region，the evaluation system should be established，the index weight should be determined with step analysis method，and the comprehensive evaluation model for planning the intercity rail transit network in Pearl River Delta Region should be established with fuzzy comprehensive evaluation method．The research result shows the methods mentioned above are available for planning intercity rail transit network．