In this paper, the joining force of stalk and leaves, the resistance of pulling force of vagina, and the resistant impact of stalk and vagina were tested as a preliminary research of cornstalk comprehensive utilization. The results show that the mechanical properties of cornstalk are its national properties following statistical laws. The joining force of stalk and leaves ranges from 0 7 to 16 N, the resistance of pulling force of vagina from 3 to 21 N, the resistant impact of stalk from 2 3 to 42 8 J, and the resistant impact of vagina from 0 5 to 3 8 J.