The invention provides a dot matrix structure dynamics response optimization design method for additive manufacturing. The method comprises the steps that an energy method is used for calculating theequivalent mechanics performance of a single-cell structure, and a proper single-cell configuration is selected according to different loads; multi-point constraints (MPC) are adopted for being connected with concentrated mass so that the multi-point acceleration is excited and converted into force motivation, and a modal displacement method is adopted for calculating structure displacement response; finally, by considering the minimum manufacturing dimension constraint of the additive manufacturing technology, design is performed by adopting the minimum dot matrix designated position displacement response as a target. Compared with a design method in the prior art, equivalence is performed on the mechanical performance of the dot matrix single-cell structure, dynamics response characteristics of the dot matrix structure are considered, the given structure configuration dot matrix can be designed, and therefore the requirement for engineering application is met.
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