The utility model discloses a power-saving pedal plate for bicycle which belongs to the technical field of the pedal plate of the bicycle industry. When the utility model is adopted, a rubber roller is made into a circular arc shape, so the convex surface and the concave surface of the pedal plate can be respectively adhered to the front foot part and the back foot part of the human body, and the contact area of the sole and the pedal plate can be increased; thereby, the homogeneous force bearing can be realized when a user uses foot sole to tread on the pedal plate, and the endurance strength of the leg muscle can be reduced.