Objective Comprehensively considering the effectiveness and safety of massage, a method for evaluating the pros and cons of the oscillation excitation and pulse excitation of the lumbar oblique-pulling manipulation is proposed, and the oscillation excitation of the lumbar oblique-pulling manipulation is optimized. Methods A multi rigid body biomechanical model of thoracolumbar spine was established. The manipulation force was used as the input force of the model. Using MATLAB/Simulink to simulate the changes in the displacement and acceleration of each segment of the lumbar spine over time. When the lumbar massage manipulation was optimized, the frequency and operand the core elements of massage force were changed, and then the maximum relative displacement and maximum acceleration of each lumbar segment were compared. A new index Z was proposed to comprehensively evaluate the effectiveness and safety of the manipulation, and we proposed a new index z to comprehensively evaluate the effectiveness and safety of the massage technique. Results The maximum relative displacement of each segment of the lumbar spine was almost equal when the two lumbar oblique-pulling manipulation of two excitation were applied. The maximum acceleration of each segment of lumbar vertebra was significantly smaller than that of pulse excitation lumbar oblique-pulling manipulation when the oscillation excitation lumbar oblique-pulling manipulation worked. Furthermore, we simulated the oscillation excitation of lumbar oblique-pulling manipulation under different frequencies and operand, and the following results are obtained: When the frequency is 1-2.5 Hz, the index z under each operand is small; when the frequency is 3.33 Hz and the operand is greater than or equal to 5, the maximum relative displacement and maximum acceleration of each segment of the lumbar spine is the largest (the maximum relative displacements of the lumbar L₁-L₅ segments are: 1.40 mm, 0.38 mm, 0.45 mm, 0.45 mm, 0.3 mm; the maximum accelerations of the lumbar L₁-L₅ segments are: 1.35 m.s-2, 0.71 m.s-2, 0.54 m.s-2, 0.54 m.s-2, 0.14 m.s-2); when the frequency is greater than or equal to 5Hz, the index z under each operand is larger. Conclusions Oscillation excitation lumbar oblique-pulling manipulation is safer than pulse excitation lumbar oblique-pulling manipulation. When the frequency of massage was 1-2.5 Hz, the overall effect of massage was better, and the overall effect had nothing to do with the operands, and the force of massage lasts for one operand; when the frequency is 3.33 Hz and the operands were ≥ 5 the effectiveness of massage had the best effect, but at this time, the strength of each segment of the lumbar spine was relatively large; the frequency of massage should not be ≥5 Hz, and the overall performance of massage was not good.