The invention discloses a rapid building device for an emergency shore connecting channel. The rapid building device comprises a platform body, and a power device capable of driving the platform body to navigate around a shore is arranged in the platform body; a front shore connecting channel which can stretch into lake shoal is hinged to the front end of the platform body, and a tail berthing channel which extends in the direction opposite to the lake shoal is hinged to the rear end of the platform body; by the adoption of the structure, the aim that under a fixed dock is damaged or under the lake shoal condition without a dock, the shore connecting channel is rapidly built is achieved, the device is allowed to transportation of large-tonnage cargo, and a ship is moored to carry out cargo unloading work; the device is particularly suitable for rolling loading and rolling unloading work of the cargo, is reasonable in structural design, high in maneuverability and good in environmental suitability, and solves the problem that a traditional buoyancy tank dock is poor in maneuverability; meanwhile, the adaptation to the complex lake shoal condition is improved, and the rapid building of the shore connecting channel under the emergency condition is achieved effectively; and the emergency conveying and rescue security capacity of the beach are ensured, and the popularization value is high.