To provide an operation arm and a hand cart in which a hand-pushing force is efficiently transmitted to the hand cart, and the hand cart can be operated in a comfortable posture.

The operation arm 4 is erected on one side or a plurality of sides of the hand cart having wheels, and comprises an operation unit 40 touched by an operator, and stays 41a, 41b which extend from the operation unit 40 to the hand cart to support the operation unit 40 by the hand cart, and further comprises rear inclination parts 43a, 43b inclined to the rear side with respect to the stays by a predetermined angle from upper ends of the stays, and a handle which is continuous to the rear side inclination parts 43a, 43b, and extends in the direction across the advancing/retracting direction while an extension part is inclined forward with respect to the stays, and formed in an arc.