To evaluate the high temperature performance of iron ore powder quickly and provide a basis and reference for sintering proportioning, the high temperature performance characteristic numbers are used to test the high temperature performance of fifteen different iron ore powder. High temperature performance characteristic numbers of iron ore powder mainly include characteristic number of assimilation reaction (TH), characteristic number of fluidity performance (LD) and characteristic number of bonding strength (BS). They are based on metallurgical physical chemistry and transmission principles, by combining practice with the parameters of reaction temperature and time etc. during high temperature reaction process of iron ore powder and by considering the effect of temperature, rate of production and actual temperature of sintering production, the connection between theory and application is established, and the behavior information in reaction process is represented dynamically. Based on the good corresponding relationship between self - bonding phase strength and tumbler strength of sinter, the relationships between TH, LD and BS are analyzed respectively. The results show that when TH and LD are all moderate, its BS is the best, therefore it can be inferred that the tumbler strength of sinter is also better.