The present invention relates to a novel bicycle, it is characterized by that its front wheel and rear wheel can be indepdendently driven, also can be driven simultaneously, it can be ridden by one person, also can be ridden by two persons, it can have several riding form, its power can be regulated, it also has health-care function, and possesses burglar alarm function, said bicycle can be folded, and can be changed into tricycle and vehicle drawn by man., said bicycle also is equipped with pump, spanner and luggage box. |