Hot compression tests for GH4706 alloy were performed at a true strain of 1.2 within a temperature range of 950-1150 ℃ and a strain rate range of 0.001-1 s-1. The optimal hot deformation temperature and strain rate range were determined using nephogram maps for dynamic recrystallization (DRX) fraction, average grain size, and grain distribution standard deviation. Processing maps at true strains from 0.4 to 0.9 were generated based on flow stress curves to identify the strain corresponding to optimal microstructure homogenization efficiency at various temperatures and strain rates. Within the optimal parameter range, processing maps indicated that the true strain of 0.6 was the optimal microstructure homogenization efficiency at 1150 ℃ and 0.01 s-1. The grain orientation spread (GOS) maps obtained from the experiment confirmed this conclusion. This study provides an effective method for microstructure homogenization control of GH4706 alloy. Meanwhile, it can provide effective reference for the minimum strain threshold of the local part of the forging in engineering.