Objective To explore the application value of ultrasound elastography combined with high-frequency ultrasound in the diagnosis of papillary thyroid cancer（PTC）．Methods From January 2022 to June 2023,82 patients with suspected PTC were treated at Chinese People’s Liberation Army Joint Logistics Force 990 Hospital．All patients were given ultrasound elastography combined with high-frequency ultrasound examination to record ultrasound features．All cases were given pathological examination,and the pathological examination were used as the gold standard for diagnosis．Results Among the 82 patients,48 were PTC（cancerous group）,accounting for 58.54%;and the other 34 were benign thyroid nodules（benign group）,accounting for 41.46%．The proportion of morphological abnormalities,posterior echo attenuation,calcification,halo ring signs,unclear boundary and internal hypoechoics in cancerous group were 81.25%,83.33%,83.33%,83.33%,81.25% and 81.25%,which were significantly higher than 52.94%,47.06%,47.06%,41.18%,47.06% and 52.94% in the benign group（P<0.05）．The highest systolic flow velocity in the cancerous group was significantly less than that in the benign group（P<0.05）,and the resistance index and pulse index were also significantly higher compared with the benign group（P<0.05）．The elastography score were mostly 3~4 in the cancerous group and 2 in the benign group,with a significant difference between the two groups（P<0.05）．Forty-seven cases of PTC were diagnosed by ultrasound elastography combined with high frequency ultrasonography,and the sensitivity and specificity in diagnosis were 97.92%（47/48）and 100.00%（34/34）,respectively．Conclusions PTC is often characterized by abnormal blood flow signals,calcification,posterior echo attenuation,halo sign and so on．The ultrasound elastography score is usually 3~4 points．Ultrasonic elastography combined with high frequency ultrasound has high value in diagnosis of PTC．