Abstract: Technology tracking is a useful method in identifying the current situation and trend of development in related technical areas, and can help us provide the information decision-making support for establishment of technical strategy.At present, technology tracking based on co-citation cluster analysis has made a rapid development but there are still some problems, mainly in two aspects:the calculation of data association and enhance of the efficiency of clustering.Based on this, the article improved co-citation cluster and a technology tracking two-dimensional visualization tools from three areas:co-citation associated model construction, improved hierarchical clustering and design multi-dimensional scale model based on dato associated.Meanwhile, author try to study visualization experiments of highway engineering from individuals and institutions in order to discriminate this field of deep-seated structural, as a kind of technical analysis which is fundamental to technology strategy selection.

Key words: co-citation cluster, technology tracking, visualization