The invention discloses a titanium cup surface annealing treatment process. The titanium cup surface annealing treatment process comprises following steps that a strong alkaline solution is used for removing oil on the surface of a titanium cup, and the temperature of the strong alkaline solution is 90 to 100 DEG C; the titanium cup is placed in clean water with the temperature being 40 to 50 DEGC to be soaked, and the titanium cup is subjected to ultrasonic cleaning for five to eight minutes; the titanium cup is continuously soaked for 3 to 4 minutes, and then is taken out, and water on thesurface of the titanium cup is drained; the titanium cup is dried, the drying temperature ranges from 150 to 180 DEG C, and the drying time ranges from 8 to 10 minutes; the titanium cup treated through the steps from a to d is transported to a roasting device to be roasted, during roasting, the roasting device generates hot air with the temperature being 600 to 650 DEG C to surround the titanium cup, and the roasting time is 4 to 10 min; and cold air is used for cooling the titanium cup, and the titanium cup surface annealing treatment is finished. The titanium cup surface annealing uniformityis ensured, the titanium cup appearance consistency is improved, and the titanium cup surface hardness is improved.