To address the problems of low detection accuracy, complex detection process, and insufficient applicability of traditional titration analysis process, an automatic titration system based on continuous spectral analysis was designed. With the core of a ball screw-driven injection pump pushing rod motion control, a visible spectrometer, a self-built data algorithm, and a high-precision titration system were adopted to improve the efficiency and accuracy of titration analysis. The relationship between the continuous transmission spectrum of solution and consumed volume of titration solution was investigated, and the end point of titration was automatically identified via the abrupt change observed in the correlation coefficient curve of solution spectrum. In this study, two types of titration were selected to test the accuracy and repeatability of the continuous spectral titration system. Results indicate that the overall relative error of the system is less than 0.5% and relative standard deviation is less than 0.3%. Furthermore, the proposed system demonstrates superior detection accuracy and repeatability compared with standard manual titration.