二胡是无指板且没有任何品位的拉弦乐器，演奏中除空弦音之外的每一个音都要由演奏者 精确地按准。除了按音位置的准确之外，按音力度的分寸等因素也是直接影响音准的重要环 节。因此，首先掌握好正确的音准概念是演奏中控制音准的基础，再通过对音程关系的分辩 ，对指距关系的 The erhu is a stringed instrument without fingerboard and of any grade, and every sound other than empty strings played by the erp must be accurately punctuated by the player. In addition to the exact location of the press, the phonetic level and other factors are also directly affect the pitch of an important part. Therefore, first of all, grasp the correct sound level of the concept is the basis for the performance control pitch, and then through the sound of the relationship between the pitch, the pitch relationship