Fingernail long pinhole like black spots may have a relationship with the nail ringworm, under the nail bruises, etc., the nail ringworm patients need to take antifungal drugs for treatment, the lack of vitamin patients need to clarify the lack of vitamin species, and then the corresponding supplement. 1. ringworm of the nail: if the patient usually do not pay attention to personal hygiene, it is easy to cause bacterial infection, thus inducing ringworm of the nail, appearing on the fingernail long needle eye like black spots, often accompanied by nail turbidity, separation, thickening and other manifestations. Nail fungus belongs to the nail fungal infection disease, patients can take terbinafine hydrochloride tablets, fluconazole capsules and other antifungal drugs for treatment. 2. under the nail bruising: if the nail by trauma or the body of vitamin deficiency, lead to the nail parts of the capillary easy to rupture bruising after the fingernail long pinhole like black spots. If for trauma reasons appear black spots, no other discomfort can wait for their own subside, such as vitamin deficiencies, can be clear lack of vitamin species and then carry out the corresponding supplement. There are other reasons for the black spots on fingernails like pinholes, and it is recommended that patients go to the hospital in time to find out the cause of the disease, and then carry out standardized treatment to avoid delays in the condition. Drugs should be used under the guidance of a doctor.