Research conclusions:(1)Budget prices for client-supplied goods and materials should be determined by a comprehensive analysis of compiled unit price and transportation charges.(2)Contracting parties should respectively estimate materials’prices and client-supplied goods and materials’prices before bidding and projects implementation. (3)Risk and responsibility for client-supplied goods and materials should be classified as designated place of delivery. For number problems in price difference adjustment，you should finally confirm to construction drawings checking of investment amount.(4)Price difference adjustment involves the supply of excess or insufficient amount. Deducted price of excessive amount should use supply price，Deducted price of insufficient amount should use budget price.(5)The results will provide references for management and policy-making of client-supplied goods and materials in railway construction projects.