The distributed event-triggered optimization problem for multiple nonholonomic robots has been studied to minimize the global battery energy consumption.Each robot possesses its own cost function which depends on the state of the hand position and represents battery energy consumption.By coordinate transformation,the dynamics of the hand positions can be formulated into two groups of first-order integrators.Then the distributed event-triggered optimization algorithm is designed such that the states of robots’ hand positions exponentially converge to the optimizer of the global cost function.Meanwhile,the velocity and orientation of each robot are ensured to reach zero and a certain constant,respectively.Moreover,the inter-execution time is lower bounded and the Zeno behavior is therefore naturally avoided.Numerical simulations show the effectiveness of the proposed algorithm.