Abstract: A LCD-based camera calibration approach using special image shooting method is presented.The results show that the approach is very effective and feasible.Because of the great difference in depth precision between the simulation and actual experimentation,several possible error resources are carefully analyzed.By the stepwise regression analysis using simulated and actual data,non-planarity of LCD is validated.And when the non-planarity of LCD is corrected in the course of LCD-based calibration,precision can be further improved.