Abstract: According to its feature, a linear bilateral auction model with incomplete information is constructed based on bargaining model to solve the problem of pricing technology when it is transferred from civil sector to military sector. The expected cost and expected value are set for the general uniform distribution and obtain the expression of equilibrium price and closing condition. On this basis, the factor of equilibrium price and impact of incomplete information to equilibrium price and the efficiency of market transactions are analyzed with an example. The result shows except for the remaining allocation rate, the value of technology for the military and the technology transfer cost, the lower limit of expected cost and the upper limit of expected value are also important determinants of the equilibrium price. Incomplete information will reduce the efficiency of market transactions and create uncertainty affect on the equilibrium price. It breaks the view some scholars believe that incomplete information will inevitably lead to a lower price. It also found that the increase of the expected cost lower limit will improve transaction efficiency and the increase of the expected value upper limit will reduce the efficiency of the transaction. Therefore, good communication between military and civil sides is important to improve transaction efficiency.