To provide a vehicle start clutch control device that can accurately and early determine that a clutch engagement is completed.

A vehicle start clutch control device including a clutch has an input side rotation member in which torque output by an engine is input; and an output side rotation member for transmitting the torque output by the engine by engaging with the input side rotation member. Moreover, the vehicle start clutch control device determines that engagement is completed by confirmation of synchronization of each rotation speed when the rotation speed of the input side rotation member reduces compared to the rotation speed of the output side rotation member (step S67), and determines that the engagement is completed by confirmation of continuous synchronization of each of the rotation speed when the rotation speed increases (step S70).