1. An intra-organization cooperation system, comprising: computer processor means for processing deal data of a commodity which is provided from members belonging to an organization to accomplish an activity and is dealt between said members in the organization, wherein said commodity is lent and borrowed between said members; means for making said activity of said members cooperative by managing said deal data of a commodity; personal information registering means for registering a balance of lending and borrowing of commodities for each member belonging to an organization; commodity information storing means for storing commodity information of each commodity; first determining means for determining a degree of association between a commodity provider and a commodity receiver when a deal request of a commodity is issued; second determining means for determining a scale of a deal of the commodity; deciding means for deciding contents of the deal according to a result of determination made by said first and second determining means; and updating means for updating the balance registered to said personal information registering means according to the contents of the deal decided by said deciding means.