A splinter in the hand is recommended to be removed immediately then it is fine, if it is not removed it may lead to pain, redness and swelling of the finger and even infection. In daily life, as long as the prick of the hand is usually painful, limiting the hand activities. Secondly, when a splinter is placed in the hand, the splinter may carry bacteria, which can cause localized redness, swelling and pain in the finger over time, resulting in a hand infection. If the thorn carries tetanus bacillus and the puncture wound is deep, it may also cause tetanus infection, and vaccination against tetanus bacillus infection is needed if necessary. The splinter should be removed with sharp-tipped tweezers after the wound has been cleaned and disinfected, and the wound should be disinfected after removal to prevent infection. If the splinter cannot be removed on its own, you should seek medical attention and have it removed with the help of a doctor.