The invention discloses a producing method of sugar-free type hard candy containing rich collagen. The method comprises the steps of putting edible connective tissue into citric acid to be soaked to remove non-collagen matter on the surface of the connective tissue, utilizing citric acid to extract to obtain a collagen solution after a collagen matrix is obtained; then adding dietary fiber into liquid maltitol and mixing and dissolving to obtain sugar liquor; finally adding the collagen solution and the citric acid sequentially in a sugar liquor cooling process, pouring into a mould to be cooled and demoulding to obtain the sugar-free hard candy containing rich collagen. The candy obtained by the invention has the functions of keeping stratum corneum moisture and fiber structure integrity, nourishing skin, keeping skin elasticity, preventing skin from being coarse, improving skin cell living environment, promoting skin tissue metabolism, enhancing blood circulation, moistening skin and the like.