When playing the big sanxian of the Yi nationality, hang the strap on the neck, the qin bar is horizontally in front of the abdomen, the qin barrel is placed on the right side of the waist and crotch, and the head of the qin is inclined to the upper left. The tiger's mouth in the left hand supports the piano rod, and the index finger, middle finger and ring finger are pressed together and only the outer strings are pressed.

The pick is made of hardwood or old bamboo, the middle is narrow and flat, and the ends are slightly wider and sloping, which can be used for playing. The extra-large sanxian cannot be played by back, so it is hung on a large branch or on a shelf to play.

The major three strings are often tuned according to the relationship of fifths, fourths or fourths and fifths. For example, the tuning is: c, g, c1 or d, g, d1. Occasionally, there are also those who are tuned according to the relationship of thirds and fourths. For example, the tuning is: : e, g, c1, etc. The pronunciation is low, the volume is loud, and the tone is rich. The left hand does not change the position, only presses the third note above the outer string, and forms the rhythm melody with this note and the open strings of the middle string and inner string.

Strumming is a commonly used technique in performance to enhance the sense of rhythm and cheerful atmosphere. The big sanxian of the Yi nationality can be used for instrumental ensemble and singing and dancing accompaniment.