In this paper, a short overview on the building principles of novel handheld systems will be provided.According to the spectrometer test results, the circuit system can meet the line array CMOS drive of near-infrared spectrometer, spectral data acquisition and transmission. The circuit system has been designed to realize linear array CMOS driving of near-infrared spectrometer, acquisition and transmission of spectral data. In addition, SNR of the circuit system is as high as 555.35 which can be Suitable for near infrared spectrometer applications.