The invention provides an efficient laver drying device based on gas flow velocity negative pressure, which relates to the technical field of laver drying. The invention discloses the efficient laverdrying device based on gas flow velocity negative pressure, which comprises a drying furnace, an air inlet is fixedly connected to the periphery of the drying furnace, a heating resistance wire is wound in the outer wall of the drying furnace, a first through hole is formed in the inner side of the drying furnace, an air blowing pipe is fixedly connected to the center of the drying furnace, and asecond through hole is formed in the periphery of the air blowing pipe. The invention discloses the efficient laver drying device based on gas flow velocity negative pressure, the laver spreading efficiency is greatly improved, compared with the prior art, the laver spreading is more time-saving and labor-saving, loss of nutritional ingredients of laver is prevented, advanced coking of the upper surfaces of laver cakes due to high dehydration speed is avoided, flowing of gas in the drying furnace is guaranteed, the drying effect is improved, the moisture regaining phenomenon is avoided, the drying efficiency is improved, and laver in the drying furnace is heated more uniformly.