TECHNOLOGY FOCUS - BIOTECHNOLOGY - Preferred Algae: The algae is green algae, red algae, brown algae or microalgae. Preferred Method: The method further involves (a) (i) pre-processing algae raw material by soaking cleaned algae in acid liquid, and (ii) pulverizing the soaked algae using pulper into sections, and mixing the pulverized algae with water, (b) (i) carrying out steam blasting process on the algae raw material by adding pre-processed algae raw material into steam blasting machine, and (ii) processing the raw material at 160-200 degrees C under pressure of 0.8-1.8 MPa for 1-10 minutes, and (iii) quickly releasing pressure of steam blasting machine to finish steam blasting process, (c) performing enzymolysis process on algae raw material by (i) extracting the blasted product with water, (ii) separating the extract to obtain upper clear liquid and sediment, (iii) obtaining small amount of sample from the sediment, (iv) measuring water content of the sample, and (v) adding cellulase and buffer solution to the remaining amount of sample to perform hydrolysis, and (d) fermenting and distilling algae raw material by (i) adding yeast extract to hydrolyzed product, (ii) regulating pH of hydrolyzed product, (iii) sterilizing the hydrolyzed product, (iv) inoculating yeast to the sterilized product, (v) fermenting the inoculated product, and (vi) distilling the fermented product while reducing pressure to obtain fuel ethanol. The step (a) further involves (i) cleaning raw materials using clean water to remove sand on the surface of algae, (ii) soaking the cleaned algae in acid liquid, preferably oxalic acid (0.5-4%, preferably 2%) based on ratio of (0.4-0.8):1, preferably 0.6:1 for 2-10 hours, preferably 6 hours, (iii) crushing the soaked algae raw material into 1.5x 0.5 cm using pulper and (iv) mixing the crushed product with water (20-80%, preferably 40%). The step (b) further involves adding pre-processed algae raw material into steam blasting machine, and processing the raw material at 175 degrees C under pressure (1.1 MPa) for 5 minutes. The step (c) further involves (i) extracting the blasted product in water (1-5 times the weight of algae) at 50-80 degrees C and separating the extract to obtain upper clear liquid and sediment, (ii) obtaining small amount of sample from the sediment, (iii) measuring water content of the obtained sample, (iv) adding cellulase to the remaining amount of sample based on ratio of (2-9):100, preferably 8:100 to obtain mixture, (v) adding buffer solution (pH value of 4-5) (10-100 mM) based on percentage of 200-2000%, preferably 300% of the insoluble sediment, (vi) performing hydrolysis on rocking bed at 40-55 degrees C, preferably 45 degrees C for 24-96 hours, preferably 72 hours at a speed of 100 revolutions per minute (rpm), (vii) separating the hydrolyzate and mixing the hydrolyzate with the upper clear liquid, and (viii) fermenting the mixture and distilling the fermented mixture to obtain ethanol. The step (d) further involves (i) adding yeast extract (0.1-1%) to hydrolyzate, (ii) regulating pH value of hydrolyzate to 3-7 using hydrochloric acid, (iii) sterilizing the hydrolyzate at 121 degrees C for 15-20 minutes, (iv) inoculating yeast to the hydrolyzate (1-20%) at 30 degrees C and fermenting the inoculated mixture for 2-6 days using rocking bed at 80-200 rpm, and distilling the fermented product under reduced pressure to obtain fuel ethanol.