The design and development of pulse train plays an important role in magnetic resonance technology, and it is very important to promote the research of new pulse train methods for the processing of magnetic resonance spectra. Different pulse sequences can be used to obtain different types of spectra in order to study compounds with different nuclei. In addition, through the design of the pulse train, the resonance frequency of a specific nucleus can be selected, which helps to identify the molecular compounds present in the sample. The design of the pulse train also affects the resolution of the spectrum. By realizing high resolution spectrum through the sequence, the close peak can be distinguished and more detailed information of the spectrum can be obtained. The design and development of pulse sequences play an important role in the analysis of chemical shift, coupling constant and other key information.