The invention provides an explosion venting window capable of keeping opened. The explosion venting window comprises a window frame, a fixed shaft, a window body and at least one resistance piece, wherein two ends of the fixed shaft are respectively mounted on two sides of the window frame; the window body is arranged on the fixed shaft and can be rotated around the fiexd shaft; the gravity center of the window body is located above the fixed shaft; the resistance piece is located on at least one opposite surface of the window frame and the window body, so as to regulate and control the resistance to be overcome when the window body is opened. The explosion venting window is simple in structure, and the opening state can be kept.