A nondestructive identification method of counterfeit Citri Reticulatae Pericarpium based on grating portable near infrared spectrometer and chemometrics was proposed.The diffuse reflectance spectra of Citri Reticulatae Pericarpium and counterfeit Citri Reticulatae Pericarpium were collected.The interferences in the spectra were eliminated with spectral pretreatment methods,and the identification models were established by principal component analysis method.The results showed that 100%identification of counterfeit Citri Reticulatae Pericarpium...