The components of the tangential stretch mode of swtns are assigned , the variational curve of the value of ig / id changed with laser power is obtained at 632 . 8nm excitation , the vibration of d mode is assigned renewedly 对单壁碳纳米管的正切拉伸模的成分进行了归属,在632 . 8nm激发波长下得到了ig / io值的随激光功率变化曲线。重新对d模的振动进行了归属。