A double-rotor electric motor comprises a rotating shaft and a shell arranged on the rotating shaft in a sleeving mode. The two ends of the shell are connected with the rotating shaft through concentric bearings respectively. The rotating shaft is formed by splicing two hollow half shafts. The opposite ends of the two half shafts are each provided with an annular shaft shoulder used for stabilizing the corresponding half shaft. The two annular shaft shoulders are arranged in a sleeved mode through a hollow bearing I. The annular shaft shoulder located on the outer side is connected with the shell through a hollow bearing II and divides the shell into a left section and a right section. Each section is internally provided with a stator assembly located on the inner wall of the shell, and a rotor assembly located on the corresponding half shaft. The double-stator structure is adopted, and therefore the work efficiency of the double-rotor electric motor can be effectively improved.