The invention relates to the technical field of petroleum equipment and particularly relates to a visible liquefied petroleum gas steel cylinder. The visible liquefied petroleum gas steel cylinder comprises a steel cylinder body, wherein an annular support seat for supporting the steel cylinder body is arranged at the bottom of the steel cylinder body; a rubber pad is arranged at the end, contacted with the ground, of the annular support seat; a clamp groove is formed in the rubber pad; the annular support seat is clamped in the clamp groove; a glass tube and a scale corresponding to the glasstube are arranged on the steel cylinder body; the glass tube is communicated with the steel cylinder body, a communicating vessel structure is formed by the glass tube and the steel cylinder body, and the glass tube is fixed on the steel cylinder body through a glass tube clamp spring. The visible liquefied petroleum gas steel cylinder has the advantages as follows: the rubber pad is arranged atthe bottom of the annular support seat in a sleeving manner, so that the steel cylinder body cannot produce rigid shock to the ground or damage the ground when taken up or put down, meanwhile, noise produced when the steel cylinder body is placed is reduced, and the device is simple in structure and reliable in airtightness and can meet operational needs completely.