A bicycle braking device comprising: a first brake arm having a first mounting portion pivotally mountable to a bicycle frame, wherein the first mounting portion is adapted to mount to the bicycle frame for pivoting around a first pivot axis, a first brake shoe mounting portion to which a first brake shoe is mounted, and a first cable mounting portion to which a brake operating cable is mounted; a second brake arm having a second mounting portion pivotally mountable to the bicycle frame, wherein the second brake arm mounting portion is adapted to mount to the bicycle frame for pivoting around a second pivot axis, a second cable mounting portion, a second brake shoe mounting portion to which a second brake shoe is mounted a biasing member biasing the first brake arm and the second brake arm in a direction in which the first brake shoe mounting portion and the second brake shoe mounting portion are separated from each other; and a communicating member which allows the first brake arm and the second brake arm to pivot in synchronization, wherein the biasing member is a coil spring having a first end portion and a second end portion, the first brake arm having a first spring hooking portion hooking the first end portion of the biasing member, provided on a rear surface of the first brake arm, and the second brake arm having a second spring hooking portion hooking the second end portion of the biasing member, provided on a rear surface of the second brake arm body, characterized in that both the first cable mounting portion and the second cable mounting portion are disposed on a same side as one of the first brake shoe mounting portion and the second brake shoe mounting portion, wherein the same side is a side of the second brake show mounting portion, and a distance from the first end portion of the biasing member to the first pivot axis is smaller than a distance from the second end portion of the biasing member to the second pivot axis. a first brake arm having a first mounting portion pivotally mountable to a bicycle frame, wherein the first mounting portion is adapted to mount to the bicycle frame for pivoting around a first pivot axis, a first brake shoe mounting portion to which a first brake shoe is mounted, and a first cable mounting portion to which a brake operating cable is mounted; a first mounting portion pivotally mountable to a bicycle frame, wherein the first mounting portion is adapted to mount to the bicycle frame for pivoting around a first pivot axis, a first brake shoe mounting portion to which a first brake shoe is mounted, and a first cable mounting portion to which a brake operating cable is mounted; a second brake arm having a second mounting portion pivotally mountable to the bicycle frame, wherein the second brake arm mounting portion is adapted to mount to the bicycle frame for pivoting around a second pivot axis, a second cable mounting portion, a second brake shoe mounting portion to which a second brake shoe is mounted a biasing member biasing the first brake arm and the second brake arm in a direction in which the first brake shoe mounting portion and the second brake shoe mounting portion are separated from each other; and a communicating member which allows the first brake arm and the second brake arm to pivot in synchronization, wherein the biasing member is a coil spring having a first end portion and a second end portion, a second mounting portion pivotally mountable to the bicycle frame, wherein the second brake arm mounting portion is adapted to mount to the bicycle frame for pivoting around a second pivot axis, a second cable mounting portion, a second brake shoe mounting portion to which a second brake shoe is mounted a biasing member biasing the first brake arm and the second brake arm in a direction in which the first brake shoe mounting portion and the second brake shoe mounting portion are separated from each other; and a communicating member which allows the first brake arm and the second brake arm to pivot in synchronization, wherein the biasing member is a coil spring having a first end portion and a second end portion, the first brake arm having a first spring hooking portion hooking the first end portion of the biasing member, provided on a rear surface of the first brake arm, and the second brake arm having a second spring hooking portion hooking the second end portion of the biasing member, provided on a rear surface of the second brake arm body, characterized in that both the first cable mounting portion and the second cable mounting portion are disposed on a same side as one of the first brake shoe mounting portion and the second brake shoe mounting portion, wherein the same side is a side of the second brake show mounting portion, and a distance from the first end portion of the biasing member to the first pivot axis is smaller than a distance from the second end portion of the biasing member to the second pivot axis.