Near infrared spectrum damage-free analysis method for anti-tuberculosis drugs

The invention discloses method of testing effective constituent of near infrared light detection anti tubercular agent. Using the basis of anti tubercular agent action spectrum near infrared light and the measurand information, getting effective constituent (rifampicin,isoniazide or pyrazinamide ) of which by anti tubercular agent action spectrum near infrared light and their background information; achieving the lossless detection the content of effective constituent (rifampicin,isoniazide or pyrazinamide ) in the anti tubercular agent near infrared light complex background by the multi element normalized method of chemometrics. It settles the problem of high cost, long period, medicament cannot use after analyzing etc when analyzing the anti tubercular agent effective constituent in existence, establishing the fast, high pass mete, lossless and needed on-line analysis green medicament analytic method for the anti tubercular agent. The advantages is that the sample pre-processing is easy, the detection is fast and undamaged, the detection time of each sample is shortage of two min; the result is credibility, the error is less than5%.