A foldable stroller includes two front legs, two rear legs, a basket frame, two seat-supporting tubes, two pivoting members, two connecting rods, and a backrest-supporting tube. Rotation of the basket frame and the seat-supporting tubes relative to each other about a pivot point results in rotation of the pivoting members relative to the connecting rods about another pivot point to thereby rotate the backrest-supporting tube and the basket frame toward the rear legs in different directions.