Abstract:Based on the perspective of patent analysis, with Citespace and patent composite index analysis method, introduced indices such as technology emergence rate, recurrence rate, level for the degree of technology center and technical comprehensive index to build the research model for the technology development trend. Through the analysis of the specific technology field to summarize the research hotspot, technology opportunity and technology development path and then achieve the goal of predicting the technology development trend. Finally,carried the empirical analysis on the technology development trend of the automobile exhaust purificationSfield to verify the feasibility of the analysis model.