Method for highly sensitively and quickly distinguishing crude oil of different types and regions

The invention relates to the technical field of detection, and discloses a method for highly sensitively and quickly distinguishing crude oil of different types and regions, which comprises the following steps: S1, diluting Malaysia crude oil, Malaysia asphalt and Angora crude oil to 100 times by using methanol as a solvent; s2, sucking 1-5 [mu] L of Malaysia crude oil, Malaysia asphalt and an Angora crude oil diluent by using a microsyringe, performing sample introduction by using an SPME module, and performing ionization through a flow-through medium path discharge source; s3, adjusting the SPME sample introduction module and the flow-through medium path discharge source to specific parameters, and averaging the results of each time; and S4, importing the mass spectrum data obtained in the positive and negative ion mode into AnalyzerPro software to carry out PCA and volcano plot analysis so as to obtain difference and differential ions of the Malaysia crude oil, the Malaysia asphalt and the Angora crude oil