NOVELTY - Preparing submicron zeolite molecular sieve, comprises weighing sodium silicate, sodium aluminate, sodium hydroxide, polyethylene glycol 1000 and deionized water, heating the first part of deionized water and adding polyethylene glycol 1000, adding sodium hydroxide to a second part of deionized water and then adding sodium aluminate and hydrolyzing, dissolving the sodium silicate in a third part of the deionized water, adding sodium silicate solution in the glycol 1000 solution in an ice bath and crystallizing to obtain molecule sieve, and adding strontium nitrate solution and heating.    USE - The method is useful for preparing submicron zeolite molecular sieve for absorbing and separating hydrogen and methane from coke oven gas (all claimed).    ADVANTAGE - The method simply and rapidly prepares the submicron zeolite molecular sieve without adding template agent.    DETAILED DESCRIPTION - Preparing a submicron zeolite molecular sieve, comprises (1) weighing sodium silicate, sodium aluminate, sodium hydroxide, polyethylene glycol 1000 and deionized water, where the deionized water is divided into three parts, (2) heating the first part of deionized water at 60-80 degrees C and then adding polyethylene glycol 1000 and stirring to obtain polyethylene glycol 1000 solution, (3) adding sodium hydroxide to a second part of deionized water to completely dissolve and adding sodium aluminate and stirring and hydrolyzing for 30-90 minutes, (4) adding obtained solution to polyethylene glycol 1000 solution and mixing, (5) dissolving the sodium silicate in a third part of the deionized water to obtain sodium silicate solution, adding the sodium silicate solution in polyethylene glycol 1000 solution in an ice bath and stirring for 1-3 hour, crystallizing obtained solution in a reaction kettle at 70-120 degrees C for 5-10 hours, filtering and washing the product until the pH is less than 9, and drying the product at 90-110 degrees C for overnight to obtain specialty gradesamine resistance (SrA) molecule sieve, and (6) adding 10-20 g/l of strontium nitrate solution to the SrA molecule sieve and then placing in an oil bath and heating at 70-90 degrees C for 8-10 hours, filtering and washing using deionized water until pH value reaches less than 9, drying the filter residue at 90-110 degrees C for overnight, and sintering in a muffle furnace at 400-500 degrees C for 2-4 hours.