In recent years, Raman spectroscopy has been widely used in materials science, biomedical science, and environmental monitoring due to its fast non-destructive, high molecular specificity, and high sensitivity characteristics, becoming an important tool for spectral analysis. However, traditional Raman spectrometers are difficult to adapt to many special application scenarios due to their large size and high cost. Therefore, the demand for miniaturized, low-cost, and high-performance Raman spectrometers is increasing. The advancement of integrated optoelectronic technology has brought new development opportunities for the miniaturization of Raman spectrometers, making chip level Raman spectrometers possible. This article reviews the advancement of Raman spectrometers and their miniaturization. Meanwhile, it introducesexemplary on-chip spectrometers with potentials for Raman spectroscopy applications, providing important references for the miniaturization of existing Raman spectrometers and the exploration of spectral applications in miniaturized spectrometers, and promoting the common development and continuous innovation of technology and applications.