The purpose of the present invention is to be able to produce solid fuel with high calorie by successively performing processes of mixing chemical additives with pig ordure, sterilizing, deodorizing to remove bad smells of pig ordure, dehydrating, and mixing with peat. That is, the present invention is characterized in that the high efficient solid fuel is produced by successively performing a pig ordure precipitate deodorization process (1) of mixing acetic acid and sodium hypochlorite to deodorize the bad smell of the pig ordure a pig ordure precipitate dehydration process (2) of dehydrating the pig ordure precipitate, which has completed the pig ordure precipitate deodorization process, with a dehydration apparatus to maintain 40-50% of moisture a peat mixing process (3) of mixing 20-30 weight% of peat to 70-80 weight% of the pig ordure solid, which has completed the pig ordure solid dehydration process a pig ordure mixture deodorization process (4) of mixing the pig ordure mixture, which has been prepared by the peat mixing process, with acetic acid and sodium hypochlorite to deodorize the bad smell a pig ordure mixture dehydration process (5) of dehydrating the pig ordure mixture, which has completed the pig ordure mixture deodorization process, with a dehydrating apparatus to maintain 20-25% of moisture a mixture pellet molding process (6) of molding the pig ordure mixture, which has completed the pig ordure mixture dehydration process, into pellets having a fixed size and form and a mixture pellet drying process (7) of drying the mixture pellets, which have completed the mixture pellet molding process, with a microwave dryer to maintain 6-8% of moisture.COPYRIGHT KIPO 2014[Reference numerals] (1) Pig ordure precipitate deodorization process (2) Pig ordure precipitate dehydration process (3) Peat mixing process (4) Pig ordure mixture deodorization process (5) Pig ordure mixture dehydration process (6) Mixture pellet molding process (7) Mixture pellet drying pr