The invention provides a super fine alga fiber toweling coverlet, which is formed by weaving super fine alga fiber, wherein the diameter of the super fine alga fiber is between 0.4 and 0.8 um, and the super fine alga fiber is the mixing fiber prepared by that CMC is mixed with sodium alginate, and subjected to CaCl2 coagulating bath and drying; because the alga fiber has strong functions of bacteriostasis and antisepsis, when the alga fiber is applied to the toweling coverlet product, the sanitary condition and service life of the towel or toweling coverlet are obviously improved, and the towel made of the alga fiber has good health care effect on the human body; at the same time, the alga fiber is added with metal ions and attachments, thereby further enhancing the sterilization and bacteriostasis capability and improving the product quality; moreover, because the alga fiber added with the metal ions is colorful, the post dyeing treatment is unnecessary, and the defect that the toweling coverlet is discolored after being used for a long time is overcome.