The present invention relates to a wearable hand robot with improved thumb movement, and more particularly, simplifies the structure of a wearable robot that moves the user's finger by a structure in the form of an exoskeleton by wearing it as a glove on the user's hand and improving user convenience. It relates to a wearable hand robot with improved movement of one thumb. The wearable hand robot with improved thumb movement to achieve the above-described object has an effect of assisting in gripping an object with a strong force by implementing the actual thumb movement.