The invention relates to the field of hot-rolled pickling plates, in particular to a production method for the low-cost 490Mpa-grade hot-rolled pickling plate. The alloy composition of the hot-rolledpickling plate comprises, by weight, 0.05%-0.09% of C, less than or equal to 0. 35% of Si, 0.10%-0.50% of Mn, less than or equal to 0.020% of P, less than or equal to 0.015% of S, 0.015%-0.040% of Als, 0.050%-0.070% of Ti, less than or equal to 0.006% of N, and the balance iron and inevitable impurities; a casting blank is put into a walking beam furnace for heating, heat preserving is carried outfor 40-80 minutes at 1170-1270 DEG C, and solid treatment is carried out on a large amount of alloy; after the casting blank is discharged from the furnace, high-pressure water descaling is carried out, and then the descaled cast blank enters a roughing mill for rolling, wherein the starting rolling temperature ranges from 1080 DEG C to 1150 DEG C; the temperature of the intermediate blank subjected to rough rolling is larger than or equal to 950 DEG C, then the intermediate blank is fed into a finish rolling unit for rolling, and the finish rolling temperature is 820 DEG C to 880 DEG C; andafter laminar cooling, reeling is carried out, and the reeling temperature is 560 DEG C to 650 DEG C. According to the production method, the problems of poor market competition ability and serious influence on the performance of a steel plant and the like caused by excessive production cost for the 490 Mpa-grade hot-rolled pickling plate in the prior art are solved.