The basic Men strike in kendo is a fundamental technique that is enforced in big operation through by brandishing a bamboo sword. However, this stroke differs from the stroke executed in a battle. It has been maintained that one of the qualities possessed by a leader is the ability to qualitatively convert these two methods of strokes by shifting from a basic stage to the battle stage. This research aims to clarify the difference between these two strokes. Paying particular attention to the speed of the tip of a bamboo sword, it attempts to address the mechanism that generates speed. As a result, the following issues were resolved : In the basic Men strike, the bamboo sword was mainly swung up by crooking a shoulder joint and an elbow joint on either side, and swung down by extending of a shoulder joint, an elbow joint and a wrist joint on either side. However, in the battle Men strike, the shoulder joint on either side was always crooked from swinging up of a bamboo sword to swinging down. During swinging down a bamboo sword, there was little angle change of an elbow joint and a left wrist joint on either side, and the right wrist join was extending. Such an operation of a upper limbs mainly is by rotating a bamboo sword in the basic Men strike and by pushing a bamboo sword to the front in the battle Men strike. That is, the speed of the point of a sword was produced by the different bamboo sword operation at the basic Men strike and the battle Men strike. The view of this research clarifies the factor on instruction required in order to aim at qualitative conversion of Men strike technique from the basic strike to the battle strike, and it is thought that it is useful to future instruction.