The invention relates to an alcohol lamp which comprises an alcohol lamp shell. A lampwick made of a flexible material is arranged inside the alcohol lamp shell. A sealing cover is arranged at the upper end of the alcohol lamp shell. A supporting base is arranged at the bottom of the alcohol lamp shell, and the supporting base is of a horn structure, the diameter of the upper end of the horn structure is small, and the diameter of the lower end of the horn structure is large. An obliquely arranged injection pipe is arranged on one side of the upper end of the alcohol lamp shell, a sealing pad is arranged on the inner side of a port of the injection pipe, and the sealing pad is connected with a sealing cap. Through arrangement of the supporting base, the contact area of the alcohol lamp and a table top can be increased, placement stability is improved, and safety during operation is improved. Through arrangement of the injection pipe and the sealing cap, when new alcohol needs to be injected after alcohol inside the alcohol lamp is used for a period of time, the sealing cap is opened, and the new alcohol is injected directly via the injection pipe, so that the alcohol is prevented from contaminating the table top, and practicability is good.