From the innovation system perfective, the meaning of the innovation system for technology knowledge of industrial cluster (ISTKIC) was expounded. The features of ISTKIC, especially the technology knowledge, innovation participators and innovation action were studied and its structural model was composed.  The special staged characteristic of ISTKIC was pointed out and the evolutionary regular pattern and trajectories were revealed. The case of ISTKIC from Shenyang equipment machine manufacturing industry was also analyzed.