National-level famous traditional Chinese medicine(TCM) doctor Professor Fan Yong-sheng has high-level accomplishments in the treatment of arthralgia. According to clinical diagnosis and dialectic,TCM with appropriate medicinal properties were flexibly applied,with a remarkable efficacy. Especially in the application of insect drugs,he has accumulated abundant clinical experience.According to the main syndromes of arthralgia and pathogenic site,patient' s constitution,Scorpio,Scolopendra,Pheretima,Vespae Nidus,Bombyx Batryticatus,Manis Squama,Bungarus Parvus,Zaocys,Agkistrodon,Cicadae Periostracum,Aspongopus,Eupolyphaga Steleophaga,Silkworm Sand were properly selected. Attention was also paid to the compatibility between insect drugs and antirheumatic drugs,blood-activating drugs and tonifying drugs. In the premise of safe and effective application in the treatment of arthralgia,insect drugs show such efficacies as antipyretic,activating collaterals and relieving pain.