A stroller includes two side frames and a first seat disposed between the side frames. Each side frame includes an armrest, a first leg, a second leg, a handle, and a first link. The first leg and the second leg are pivoted to the armrest, respectively. The handle is pivoted to the armrest, and a bottom end of the handle is detachably engaged with the first leg. A front end of the first link is pivoted to the second leg, and another opposite end is pivoted to the handle. The first seat is movably disposed on the first link. Thus, when the handle rotates between an extended position and a folded position, the first link can bring the first seat and the second leg to rotate relative to the armrest.