Combining structure of concrete filled steel tube columns,steel reinforced concrete columns and steel and concrete composite beams are widely used in Merchants Plaza project in Shenzhen.The intelligent material of PZT is adopted in 4 typical positions to monitor and evaluate the structure.Taking the second segment concrete filled steel tube columns at the ground floor as example which is 7m in height,the application of PZT in capability monitoring of combining structure is introduced.Moreover,the monitoring principle,operation methods,monitoring schemes,implement process and data analysis are introduced.The results show that the monitoring effect is good.