Black spots surfacing on plantar warts are usually not worsening, but are caused by vascular proliferation or blood clotting. Plantar warts are benign skin growths on the plantar areas of the feet caused by human papillomavirus infection. The condition is usually multiple lesions, which are multiple adjacent warts fused in clusters, and because they grow on the soles of the feet they are prone to keratinization forming rough yellowish or brownish patches. The metatarsal warts are well demarcated and a thickened keratinous ring can be seen around them, with a soft core of keratin visible after removal of the stratum corneum. Metatarsal warts with black dots floating generally due to the surrounding capillary proliferation after the rupture of bleeding, bleeding in the local blood coagulation, naked eye observation for dense small black dots floating, generally is not deterioration. You can use medication, such as retinoic acid, salicylic acid, fluorouracil, etc. to soften the stratum corneum, or you can choose pingyangmycin, bleomycin, etc. intradermal injection. Patients with plantar warts black spots should go to the hospital for a clear diagnosis, standardized treatment under the guidance of the doctor, to avoid delay in treatment.