In Standard Modern Mandarin,should palatal series be regorded as the same phoneme with the velar series or the dental affricates,the auther proposed his evideme from.

• 现代北京话辅音系统中可否把舌面音和舌根音看做同一音位,或把舌面音和舌尖音看做同一音位,笔者用历时音韵学的观点提出了作为底层形式的舌面音存在的证据。