A sunlight greenhouse with a heat-storage heat-insulation wall comprises a transmitting plastic greenhouse film and a heat-insulation quilt. The sunlight greenhouse is characterized by further comprising a foundation pad. The foundation pad is a solidified concrete body, a rear sleeper beam is fixedly connected with the foundation pad, the two ends of each arch frame are inserted and fixedly connected with a front ground beam and the rear sleeper beam respectively, and a plurality of arch frames are fixedly connected to be a whole through a longitudinal beam. Gables on the two sides are fixedly connected with a gable ground beam, and rear walls are placed on the rear sleeper beam and the arch frames and are fixedly connected. The transmitting plastic greenhouse film is externally laid on the arch frames and fixedly connected with the arch frames, the heat-insulation quilt covers the outer portion of the transmitting plastic greenhouse film, and heat-insulation plates are arranged on the outer sides of the foundation pad, the gable ground beam and the front ground beam along the circumference. A building method comprises the steps of leveling the ground, laying the rear sleeper beam, installing the arch frames, installing the gables on the two sides, installing the longitudinal beam, installing the wall, laying the transmitting plastic greenhouse film, laying the heat-insulation quilt, installing a film winder, installing a curtain winding machine, arranging the heat-insulation plates along the circumference, and performing earth filling and compaction. The sunlight greenhouse has the advantages of being simple in structure, low in cost, balanced in temperature, economical, environmentally friendly and favorable for second ploughing.