The utility model relates to the technical field of petroleum engineering, in particular to a portable equipment maintenance warning screen, which comprises an electronic display screen, a single chip microcomputer, a decoder, a dial switch and a power supply, many warning statements are stored in the single chip microcomputer, appropriate warning statements are selected through dial switch, the power supply charges for the parts, magnets are arranged in the portable equipment maintenance warning screen, and hooks are arranged on the back of the portable equipment maintenance warning screen. The portable equipment maintenance warning screen, can achieve to display flowing warning statements, is particularly obvious at night, reduces misoperation of staffs, and guarantees safety protection effect of human bodies and equipment.