members by considering detailed information on the negotiation incidentally the threshold 1 and threshold 2 are dynamically changed from objective data of the successful negotiation and the failed negotiation as stated above and the difference of the judgment among the sales managers is lost moreover the workload is reduced because the information gathering and analysis are automatically carried out by the aforementioned processing thereby the sales manager can carry out an important work such as the strategy planning in addition the establishment of the best practice at the early stage becomes possible incidentally as for an individual negotiation the processing shown in fig4 will be executed that is when the initial contact phase ends the negotiation state is judged step s 401 it is judged whether there is a problem as for the negotiation state at a predetermined timing step s 403 because it is reported to the sales manager by the service provider when there is a problem that is the negotiation state is b c or d appropriate measures are carried out by the sales manager step s 405 afterwards when the relation establishment phase ends the negotiation state is judged step s 407 then it is judged whether there.