Precise design method and design system for integrated die casting structure

The invention discloses a precise design method and system for an integrated die casting structure. The method comprises the steps that (1) a die casting structure design module conducts overall structure design; (2) establishing an integrated mechanical property influence factor database module, and obtaining a maximum influence factor T or P or V influencing the mechanical property distribution of the die casting; (3) acquiring an attenuation factor # imgabs1 # or # imgabs2 # or # imgabs3 # under the maximum influence factor under different # imgabs0 # through a coupling decision module; and (4) the integrated die casting structure in the step (1) is optimally designed through a structure precise design module. The precise design method and design system for the integrated die casting structure are used for carrying out precise optimization design on integrated die casting parts, light weight and integration of die casting products are achieved under the condition that the mechanical performance of die cast