A collapsible hunting blind includes a blind awning and a collapsible frame. The blind awning includes two sidewalls, a front wall, a rear wall, and a top wall. The collapsible frame includes a retention frame and two tensional frames. The retention frame is detachably coupling between the sidewalls to retain a distance therebetween at the setup position, wherein when the retention frame is released from the sidewalls, the sidewalls are adapted to overlap with each other at the folded position. The two tensional frames are provided at the sidewalls respectively for providing a tensional force thereat at the setup position to stretch out the sidewalls in a tensional manner. When each of the tensional frames is actuated to reduce the tensional force at the respective sidewall of the blind awning, the sidewall is adapted to overlappedly fold into a compact structure at the folded position.