In 2018, CAAI invited seven well-known experts in the field of artificial intelligence in China. According to the regulations on the selection of excellent Phd theses of the Chinese artificial intelligence society, 9 winning theses were finally determined by experts after final examination and two rounds of voting. By now, the selection of 2018 excellent Phd theses of CAAI has been completed and published. The final results of the 2018 excellent Phd dissertation selection by the CAAI are now officially announced.