In view of the bidding scoring algorithm adopted by the State Grid for a comprehensive evaluation, an analysis has been made, by using mathematical statistics, of the cargo list and price scoring concerning the statistics of five batches, namely, from the fifth patch in 2013 to the third patch of 2014. An average quotation can be obtained of the cargo list of the third patch in 2014 and the tender offer of the capacitive electricity. An improved bidding model under variable ratio has thus been established in the non-cooperative mode. A budget price of the fourth batch in 2014 will be worked out by using Markov chain algorithm, and a prediction of its budget price of the given packages can be achieved. Finally, some reasonable proposals have been made for the National Grid bidding method reform.