Abstract: A bicycle control device arranged on a curved handlebar of a bicycle and used to adjust a component of the bicycle is provided. The curved handlebar includes a straight section and a curved section extending from both ends of the straight section. The control device includes a fastener, a first connecting rod and a second connecting rod. The fastener has a hollow space for the curved handlebar to pass through, a first pivoting portion and a second pivoting portion. The first connecting rod has a third pivoting portion and a first pulling portion, wherein the first connecting rod is pivoted to the first pivoting portion through the third pivoting portion. The second connecting rod has a fourth pivoting portion and a second pulling portion, wherein the second connecting rod is pivoted to the second pivoting portion through the fourth pivoting portion.