An emergency opening device for an aircraft door fitted with an opening mechanism, comprising: - actuating means designed to actuate the opening mechanism, which can switch between a passive state and an active state of activating the opening mechanism, and which comprise: a tubular operating member provided with a first end designed to be connected to the door, and with a locking second end ; elastic compression means arranged between a fixed end-stop element and the operating member ; a retainer for restraining the locking second end , able to move between a closed position of locking of the locking second end , in a position of the operating member corresponding to the passive state of the actuating means in which position the elastic means are kept compressed, and an open position of releasing of the locking second end allowing the operating member to move along an axis of movement (X) toward a position corresponding to the active state of the actuating means, under the effect of the force resulting from the expansion of the elastic means ; - activating means for activating the actuating means designed to bring about the opening of the retainer; this emergency opening device being characterized in that : - the tubular operating member has a stop surface on its locking second end ; - the retainer comprises: a lever equipped with a locking tooth and mounted with the ability to pivot on the fixed end-stop element , the lever being able to move between a closed position in which the locking tooth collaborates with the stop surface to lock the locking second end , and an open position in which the locking tooth is distant from the stop surface ; and a rotary latch having a retaining surface defined by a portion of a cylinder centered on the axis of movement (X), the rotary latch being able to rotate about the axis of movement (X) between a closed position in which the retaining surface holds the lever in its closed position, and an open position in which the retaining surface is away from the lever . - actuating means designed to actuate the opening mechanism, which can switch between a passive state and an active state of activating the opening mechanism, and which comprise: a tubular operating member provided with a first end designed to be connected to the door, and with a locking second end ; elastic compression means arranged between a fixed end-stop element and the operating member ; a retainer for restraining the locking second end , able to move between a closed position of locking of the locking second end , in a position of the operating member corresponding to the passive state of the actuating means in which position the elastic means are kept compressed, and an open position of releasing of the locking second end allowing the operating member to move along an axis of movement (X) toward a position corresponding to the active state of the actuating means, under the effect of the force resulting from the expansion of the elastic means ; - activating means for activating the actuating means designed to bring about the opening of the retainer; - the tubular operating member has a stop surface on its locking second end ; - the retainer comprises: a lever equipped with a locking tooth and mounted with the ability to pivot on the fixed end-stop element , the lever being able to move between a closed position in which the locking tooth collaborates with the stop surface to lock the locking second end , and an open position in which the locking tooth is distant from the stop surface ; and a rotary latch having a retaining surface defined by a portion of a cylinder centered on the axis of movement (X), the rotary latch being able to rotate about the axis of movement (X) between a closed position in which the retaining surface holds the lever in its closed position, and an open position in which the retaining surface is away from the lever . <EOS>