The laws of blocking process forming on GH4169 alloy blade were revealed and then process parameters were optimized  respectively through the research of deformation temperature, pressure on extrusioned rod quantity of the forming and deformation speed, friction conditions on each fields of the head forming based on the plastic finite element theory and applying Deform numerical simulation platform. The results show that appropriately increasing of the extrusioned rod forging temperature can make the end forging temperature to be stationary distributed; with increasing of deformation temperature to the rod, the flow speed difference between regional metals is reduced gradually, and rodextrusion is the nonlinear deformation process; for the condition of the rod from elongation forming to the final shape stage, the strain gradient is reduced first and then rised sharply; with the increase of deformation speed, the equivalent strain rate of upset head part becomes bigger and bigger and the distribution is becoming more uniform, and the maximum principal stress of tensile stress has the stronger effect. The greater the friction factor, the damage value becomes more increasingly, each section of tenons displacement field value has large differences ,and under high friction factor, the material filling speed is uneven.