A cellulose acylate-based dope, which has an exothermic peak giving a calorific value of 1 to 10 J/g (inclusive), between 0 and 40.degree. C.; wherein collected wastes of cellulose acylate which are obtained by collecting and crushing a cellulose acylate film edge trimmed when raw material of the film is cast, are used in an amount of 5 to 60% by weight of the whole of the cellulose acylate or; wherein the dope comprises a solvent, wherein a recovery solvent is used in an amount of 20 to 100% of the entire solvent and; a cellulose acylate film produced by using the same.