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When dealing with the airborne LiDAR data without control conditions, it is difficult to compensate for the system deviation caused by the POS system and easy to cause the problem of error accumulation due to the influence of the selection factor of the adjustment datum. An airborne LiDAR strip quasi-stable adjustment method is proposed to solve this difficulty. Firstly, the strip deformation model is introduced which is used in strip adjustment methods. Then, the airborne LiDAR strip quasi-stable adjustment model is discussed in detail and quasi-stable adjustment restrict equation is deduced. And the reference weight of the quasi-stable adjustment can be adjusted according to the actual situation of the survey area. Finally, this model is used in airborne LiDAR adjustment experiment. The results demonstrate that strip quasi-stable adjustment method can significantly reduce data’s systematic error, while restrain the strip adjustment error accumulation and improve the adjustment accuracy without the control condition.