The invention discloses a safe energy-saving intelligent elevator, comprising a lift car, a door system, a guide rail, a balance system, an overload limit device and a control system which are located in a shaftway; the lift car comprises a car body and a lift car frame, and the door system comprises a lift car door and a layer door; door stop devices are arranged on both upper and lower ends of the two sides of the lift car door, each door stop device comprises a fixing component and a door stop component, the balance system comprises a counterweight and placing grooves arranged in two sides of the guide rail, and the counterweight is connected on the top of the lift car by a dragging steel rope and can move up and down along the guide rail. The door stop devices are arranged on the upper and lower ends of two sides of the lift car door, when the lift car door is opened, a spring drives an inner rod to extend to a direction vertical to the lift car door so as to block the lift car door, such that entering and exiting safety of taking personnel is ensured; a total weight of the counterweight is changed by second electric push rods and a bidirectional push rod, such that the elevator lift car and the counterweight are kept balanced all the time, and further the up and down operation safety of the elevator is ensured.