Ordinary erythromycin ointment can not remove blackheads. Erythromycin ointment, whose main ingredient is erythromycin, is mainly used for the treatment of suppurative skin diseases (impetigo, etc.), infections after small burns and other infections on ulcerated surfaces, etc. It cannot be used for removing blackheads, and the medication needs to be strictly in accordance with the doctor’s instructions. Blackheads are blackhead pimples, which belong to acne. They can be treated with topical retinoids such as adapalene gel, or skin care products containing salicylic acid, fruit acids and other ingredients, as appropriate. Ordinary erythromycin ointment cannot remove blackheads. If you want to remove blackheads, you can visit a regular dermatologist and use medication under the guidance of a doctor.