If the toenail is black with blood and empty, whether it needs to be removed depends on the patient’s situation, if only the toenail is black with blood and empty, then you can wait for the toenail to fall off on its own, if the toenail is black with blood and empty and accompanied by local infections and inflammation, then it needs to be removed and disinfected. The toenail bruise black empty itself is not serious, if the toenail is not infected local inflammation, no redness, swelling and pain, there is no odor, then you can wait for the toenail to fall off by itself. But the toenail bruising black after empty, resulting in a small gap under the toenail, the local hematoma, if the toenail cover often keep wet state, it is easy to secondary infection. If there is a secondary infection under the toenail cover, it is necessary to carry out nail extraction treatment and use disinfectant to disinfect the local area, and after disinfection, the local area should be kept clean and dry. If the toenail is black and empty, please follow the doctor’s instructions for treatment.