To reduce vibration by capable of disposing a balancer shaft in a proximal position of a crankshaft, or a vibration source, and by effectively canceling an inertia couple.

This balancer structure of the V-engine provided with the balancer shaft journalled thereto in parallel to the crankshaft of the V-engine is characterized in that the balancer shaft is journalled to the lower part of the crankshaft on an intermediate line drawn by halving a bank angle between first and second cylinder banks of the V-engine and passing the crank axis of the crankshaft.