Disclosed is an apparatus for treating blood vessels in the skin. The present invention comprises: a plurality of electrodes inserted into the skin, as an object of treatment, and applying an electric signal to blood vessels in the skin； an electric signal generator electrically connected with the plurality of electrodes； and a power supply unit for supplying electric power to the electric signal generator. According to the present invention, a suitable thermal damage is applied to blood vessels in the dermis or epidermis, which are causes or aggravation factors of freckles, vascular freckles, pigmentation, rosacea, flush, erythema, or hemotelangiosis, to normalize abnormal hyperproliferation in the causative blood vessels or induce phagocytosis or apoptosis of vascular cells of the causative blood vessels, thereby improving the treatment effect, reducing side effects that occur due to excessive thermal damage applied to blood vessels in conventional treatment methods, and lowering the recurrence of freckles, vascular freckles, pigmentation, rosacea, flush, erythema, or hemotelangiosis, through the revascularization of removed blood vessels.本發明之一種皮膚內血管的治療裝置具有插入施術對象的皮膚內，對皮膚內血管施予電氣信號之數個電極、與該數個電極電性連接之電氣信號發生部，及向電氣信號發生部供給電源之電源供給部。藉由本發明，不僅可以對痣、血管痣、色素沉澱、玫瑰痤瘡、潮紅、紅斑(erythema)或微血管擴張等原因或惡化因素真皮或表皮之血管造成適當的熱損傷，使原因血管的非正常的過度增生回復正常化，或誘導原因血管之血管細胞的吞噬作用(phagocytosis)或細胞凋亡(apoptosis)，以提高治療效果，更可以減少習知治療法對血管過度地施予熱損傷所產生的副作用，降低去除之血管的再形成有關的痣、血管痣、色素沉澱、玫瑰痤瘡、潮紅、紅斑(erythema)或微血管擴張等的再發生率。
