The invention provides a flow totalizer convenient to carry. The flow totalizer comprises a pull rod, a through hole, a strip-shaped plate and a sponge strip, wherein the through hole is formed in thelower side of the left end surface of the interior of a groove; the right end of the pull rod is mounted at the lower side of the left end surface of the strip-shaped plate, and the left end of the pull rod penetrates through the through hole and extends to the left side of a panel; the strip-shaped plate is arranged in the groove; and the sponge strip is mounted on the rear end surface of the strip-shaped plate through glue. The design achieves the purpose of wiping dust by enabling the sponge strip to slide on a display screen, thereby improving the dust wiping convenience on the display screen. The flow totalizer provided by the invention has a dust wiping function, is convenient to carry and is convenient and fast to disassemble and assemble.