Thumb cut a deep wound should be stitched or not is mainly based on the size of the mouth to decide. 1. The size or depth of the wound is more than two millimeters: this situation requires stitches, because the activity of the hand is relatively large, if the wound is relatively large or deep, more than two millimeters or more, it will lead to repeated bleeding of the wound, prolong the healing time, and seriously lead to infection, so you need to go to the hospital for stitches. 2. The size and depth of the wound is less than two millimeters: in this case, stitches are generally not needed, you can first disinfect it with iodophor, and then bandage it with sterile gauze to avoid infection, and at the same time, follow the doctor’s instructions to take antibiotic medication, such as cefixime tablets, amoxicillin capsules and so on. If the wound appears red, swollen and painful during the recovery period, the patient should pay attention to it, and it is recommended to consult a doctor in time, do not delay the condition.