A 92WC-8Co powder mixture with 33 nm WC grains was prepared by strengthening ball milling and was then sintered by spark plasma sintering (SPS) at 1000-1200°C for 5-18 min under 10-25 kN, respectively. Movement of the posi-tion of low punch shown shrinkage of the sintered body began above 800°C. The shrinkage slowly rose as the temperature rose from 800 to 1000°C and then quickly rose at above 1000°C and then gradually rose at above 1150°C. The densities of the samples increased with an increase in sintering temperature, rapidly below 1100°C, and then gradually above 1100°C. WC grains grow gradually with increasing sintering temperature. The powder was sintered to near full density at 1100°C for 5 min under 10 kN. The best result of the sample with 275 nm WC grains and no pores was obtained at 1150°C under 10 kN for 5 min. The research found the graphite die had a function of carburization, which could compensate the sintered body for the lack of carbon, and had the normal microstructure. A 92WC-8Co powder mixture with 33 nm WC grains was prepared by strengthening ball milling and was then sintered by spark plasma sintering (SPS) at 1000-1200 ° C for 5-18 min under 10-25 kN, respectively. Movement of the posi-tion of low punch shown shrinkage of the sintered body type above 800 ° C. The shrinkage slowly rose as the temperature rose from 800 to 1000 ° C and then quickly rose at above 1000 ° C and then gradually rose at above 1150 ° C . The densities of the samples increased with an increase in sintering temperature, rapidly below 1100 ° C, and then gradually above 1100 ° C. 5 min under 10 kN. The best result of the sample with 275 nm WC grains and no pores was obtained at 1150 ° C under 10 kN for 5 min. The research found the graphite die had a function of carburization, which could not compensate the sintering. body for the lack of carbon, and had the normal mic rostructure.