The invention discloses a super soft polyester blanket. The blanket is made of ground yarn and plush yarn after a series of technologies namely beaming, weaving, flocking cutting, pre-forming, printing, brushing and softening, wherein the mass ratio of the ground yarn to the plush yarn is 1:3, the ground yarn is blended yarn of polyester drawn textured yarn of 50D/24F and polyester filament yarn (FDY) of 50D/24F, and the plush yarn is super soft polyester filament of 300D/144F; the softening technology comprises the steps that the blanket is placed in a processing solution for 23-25 minutes and then dried, wherein the processing solution comprises, by mass, 2-3% of softening agent, 1-2% of smoothing agent and 0.5-1% of antistatic agent. In this way, the super soft polyester blanket has excellent flexibility, smoothness, shape maintenance and the like, is washable, low in weight and good in handfeel and keeps warm.