The invention discloses a high-elasticity process of a blanket. The high-elasticity process comprises the following steps: a, dewatering the blanket for 10-30 minutes; b, drying, namely drying the dewatered blanket for 12-16 minutes and cooling at the room temperature for 8 minutes; c, performing shrinkage elasticizing, namely adding an elasticizing softener for shrinkage elasticizing of the dried cooled blanket at the constant temperature and speed; d, performing secondary elasticizing by high-temperature puffing, namely fixing the blanket subjected to the shrinkage elasticizing and adding the elasticizing softener for secondary elasticizing by high-temperature puffing to obtain the required high-elasticity blanket. According to the high-elasticity process provided by the invention, the blanket is very good in high elasticity and less probable in down pile making; the fabric surface is unsmooth, bright in color and stable in quality; meanwhile, the working efficiency is improved and the benefit is increased.