Evaluation of future air combat capability includes the following main factors: the ability of finding the target,the range can be found in,the probability of discovery.In this paper,an airborne optical tracking system as the object to study a laser-search strategy with many constraints，to maximize range of search with no leakage search and to meet the probability of detection,to adapt to the maximum navigation error of the pure inertia INS on the airborne.Establish a highly efficient search strategy model which can effectively reduce duplication of search and invalid search time,take advantage of the effective field of the laser detector,and analyzed the model boundary conditions.The paper shows the simulation data of mathematical model with the determining boundary conditions.Under the height of 2000 m,to ensure no leakage search and search probability,the N=3,L= 12 km laser spot search can cover the 3σ navigation error range.If navigation error is 1σ,this can be covered in 1500 ~ 6000 m altitude.To get higher search performance,the factors include search speed,overlap coefficient,especially Laser repetition rate should be taken into account.