The invention discloses a new energy street lamp with a quick mounting structure, and belongs to the technical field of new energy, the new energy street lamp comprises a mounting rod, a mounting seat and an adjusting rod, a base is fixedly mounted on the lower surface of the adjusting rod, a sliding groove is formed in the inner wall of one side of the mounting rod, and the base is slidably mounted in the sliding groove. According to the street lamp, adjustment is conducted according to the actual use height of the street lamp through an arranged first threaded column, the adjusting rod is driven to move upwards under the limitation of the base installed at the bottom when the first threaded column rotates through a first threaded groove in the adjusting rod, the base slides in the sliding groove in the mounting rod, and the street lamp is adjusted to the proper height; the rod body can be stored, the height of the rod body can be adjusted, and the problems that due to the fact that an existing street lamp is integrally designed, the length is large, transportation and installation are not convenient, adjustment cannot be conducted according to the actual situation of an installation site, and the street lamp cannot well illuminate the site needing illumination are solved.