NOVELTY - Preparation of high altitude cold area additive comprises taking 3-20 wt.% material comprising 30 wt.% hydrogen peroxide oxidant, 1-6 wt.% antifreezing agent, 0.2-3 wt.% 2,6-di-tert-butyl-p-cresol antioxidant, 0.05-0.6 wt.% N,N-disalicylidene propyl-1,2-diamine metal deactivator, 0.008-0.06 wt.% detergent dispersant, 1-6 wt.% preservative, and 1-20 wt.% emulsifier, adding to 10-83.742 wt.% aqueous solution, uniformly mixing, adding 3-20 wt.% naphtha, 3-10 wt.% toluene, 2-10 wt.% xylene, and 2-10 wt.% 1:1 pentane-heptane, and mixing.    USE - Method for preparing high altitude cold area additive used for preparing methanol fuel (claimed).    ADVANTAGE - The methanol solves problems such as low temperature fluidity, high altitude flammability, low-sulfur nitrogen, and stability issues.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for:    (1) methanol fuel comprising 15-35 pts. wt. fuel base oil, 64-75 pts. wt. methanol, and 1-10 pts. wt. high altitude cold area methanol fuel additive; and    (2) preparation of methanol fuel comprising: (A) weighing raw materials; (B) adding fuel base oil to container; (C) adding methanol fuel additive, mixing, adding methanol, and uniformly mixing; (D) (i) adding 1-5 times 2-5 wt.% nitric acid solution to attapulgite, stirring, and acidifying for 24 hours; (ii) washing with deionized water to neutral, filtering, and drying at 115 degrees C; (iii) preparing 1-5% copper nitrate and 4%, 5%, 8%, and 10% ferric nitrate; (iv) soaking dried attapulgite in different concentration of copper nitrate solution and/or ferric nitrate solution, adding 3-10 times deionized water, placing in water bath, stirring at 70 degrees C for 8 hours, filtering, and drying at 105-115 degrees C to obtain iron metal loaded catalyst and copper and iron metal loaded catalyst at different concentrations; and (v) placing in muffle furnace at 250-600 degrees C and calcining for 2-4 hours to obtain modified attapulgite; and (E) filling into packed column at 3/4 volume, filling 4A molecular sieve at 1/4 volume, passing product in third step, and collecting product.