Due to the many parts of the twin-screw pump, each part has multiple parameters. These parameters usually show mixed technical states, making it difficult to select the parts with excellent parameters to assemble the pump. Based on analyzing the factors affecting the vibration state of the twin-screw pump, this paper establishes its two-level fuzzy comprehensive evaluation mathematical model. By creating membership functions and combining them with the measured data, the technical state of each parameter is quantified to realize the pre-assessment of the vibration technical state of the twin-screw pump. The example shows that the application of the two-level fuzzy comprehensive evaluation method in this field is feasible.