To optimize the precision forging and rolling processes of TC4 Ti-alloy bar for blade, the effects of both processes on the microstructure and properties under the same conditions were compared, and the influences of various precision forging temperatures and deformation degrees on the microstructure and properties were further analyzed. The results showed that compared with the precision forging process, the rolling deformation time was shorter and the temperature rise was obvious, resulting in a low volume fraction of primary α phase, and the strength at room and high temperature was significantly lower than that of the precision forging bar, but the microstructure was more uniform and the ultrasonic testing noise was lower. In addition, with the increase of precision forging temperature, the volume fraction of primary α phase decreased, and the tensile strength at room and high temperature decreased but the ultrasonic testing noise level improved gradually. With the intensification of the precision forging deformation, the non-uniform deformation of forging bar was sharpened, and the tensile strength at room and high temperature was gradually improved, but the ultrasonic testing noise level decreased. When the precision forging temperature was 940℃, the microstructure and properties of the precision forging bar matched well.