Research purposes: In the design process，the phenomenon that feasibility estimation exceeds pre -feasibility(proposal) estimation，the preliminary design budgetary estimation exceeds feasibility estimation often occur. How to make each stage estimates or budget preparation both accurate and reasonable and can meet the requirements of investment control in each stage，is a relatively difficult technical problems the industry faces，and stakeholder concern and often discussed. Based on the urban rail transit project cost control problems and the main factors conducted a comprehensive analysis，this paper studies identified specific measures of urban rail transit comprehensive cost control， forms a more systematic investment index control reference system in cost control aspects.
Research conclusions; By study the following conclusions are drawn ; ( 1 ) For urban rail transit projects， it is a cost control system engineering，project cost must be full life cycle management system. (2) Specific measures to control the overall cost of urban rail transit include decision - making reasonable estimates， implementation of quota design，construction change control，truthfully reflect the completion of settlement construction cost. (3 ) This system has some guidance and reference for investment estimation，preparation and review of the proposed budget of the project bidding and preliminary design etc.
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