From the perspective of syllabic capacity, the syllable type of Japanese could be divided into three kinds: short syllable, long syllable, super long syllable. In terms of the number of MORA, short syllable possesses one mora, long syllable two and super long syllable three. Rhythm is constituted by the combination of different syllables. The hold and understanding of rhythm are important for the meaning distinction of lexica or sentences. The lack of rhythm acquisition causes the severe oral communication barrier. It is obvious that rhythm acquisition is the necessary issue in Japanese pronunciation learning. The aims of this article are as follows:1. To know the difficulties of rhythm acquisition by the product pronunciation experiment of Chinese primary Japanese learner (hereafter CPJL).2. To instruct CPJL by spectrogram visualization, syncopation and speed control.3. To present the strategy of rhythm acquisition in teaching side.