Facing the large thin-walled member integration measurement principle of auto-orientation processing and testing, a kind of miniaturized multi-dimensional piezoelectric sensor is developed and calibrated. Based on the static calibration, the influence of the piezoelectric force sensor load deviation on the test precision of the multi-dimensional force is analyzed. The theoretical derivation results show that the static calibration load deviation changes the conversion coefficient, causes compensation coefficient of transverse interference to distortion and influences the output of transverse interference, resulting in measuring deviation of multidimensional force and lower test precision; the influence of the load deviation degree on the test precision of the multidimensional force is analyzed. A method to measure the deviation degree of loading point is put forward. It is found that the additional interference caused by little load deviation is much more than 5% of the sensor itself indicators. According to the fact that the load deviation in mechanical connection is unavoidable, the output proportion normalization method is used to overcome the influence of load deviation on the conversion coefficient, and the transverse interference is reduced to less than 5%.