Abstract: The roll wear model for 1700 hot strip mill(HSM) was studied and the influencing factors on roll wear were analyzed. Programming the off-line simulation process and computing the working roll wear in a certain rolling period as scheduled. The results showed that the roll wear presents a box-like shape and is affected mainly by strip width. The strip length is also one of the important factors affecting roll wear. The wear on the middle of the top roll F7 is about 302 μm after a rolling period. The roll wear curve obtained by programmed computation is compared with that plotted according to the actual measurement on a high-precision grinder, and both are well in conformity. The model is therefore proved highly accurate.