The invention discloses an ecological exhibition hall which comprises an ecological roof and an ecological wall surface. The ecological roof is arched, and the ecological roof sequentially comprises aheat insulation coating, a color steel plate and a diatom ooze composite plate from outside to inside; a solar photovoltaic panel is arranged on the ecological roof, and is electrically connected with a storage battery; a skylight is arranged in the middle of the ecological roof and made of heat insulation and sound insulation glass; a rainwater recycling system is arranged on the edge of the ecological roof; the ecological wall surface comprises an outer wall surface and an inner wall surface, and the outer wall surface sequentially comprises a planting layer, a waterproof layer and a basicwall surface from outside to inside; a bamboo charcoal plate is mounted on the surface of the inner wall surface; and a plurality of adsorption holes are formed in the bamboo charcoal plate. The invention further discloses a construction method of the ecological exhibition hall. The construction method comprises the steps of foundation and foundation wall surface construction, ecological wall surface construction, ecological roof construction and rainwater recycling system installation. Natural resources and ecological circulation are fully utilized, the environment is protected, and energy conservation and emission reduction are achieved.