Ringworm is usually caused by fungal infections such as Trichophyton, Microsporum, and Epidermophyton, and is essentially tinea corporis. It begins as a small pimple that gradually spreads outward and heals in the center on its own. Currently, ointments commonly used in the treatment of ringworm include imidazole ointment, acrylamide ointment, and compound preparation ointment. 1. Imidazole: patients can use imidazole ointment to treat ringworm, such as miconazole, econazole, bifonazole, ketoconazole, clotrimazole, luliconazole and so on. This kind of drug can prevent the synthesis of ergosterol, the main component of the fungal cell membrane, by inhibiting the cytochrome P450-dependent enzyme, so that the growth and replication of the fungus is inhibited, so as to play an antifungal effect. 2. Acrylamines: patients can also use topical terbinafine, butenafine, naftifine and other acrylamines ointment. This kind of drug belongs to the squalene cyclooxygenase non-competitive inhibitors, can indirectly affect the squalene aggregation and ergosterol biosynthesis on the cell membrane of the fungus, and then play an antifungal effect. 3. Compound preparations: for patients with more severe inflammation, can be used to contain antifungal drugs and glucocorticoids compound antifungal preparations, it should be noted that such drugs need to be used under the guidance of a professional doctor. In addition, patients with severe symptoms need to take oral terbinafine or itraconazole, and the combination of topical medications can enhance the efficacy of antifungal therapy. It is recommended that patients seek and avoid the causes of the disease in time, and choose the appropriate treatment drugs according to their specific conditions and medical advice.