The small machine room of the elevator only need 60%-70% space of the traditional machine room, in saving floor areas and construction costs. Control cabinet in machine room is designed into single-face inspection layout. The host bearing beam can also be used as hitch plate. it largely saves the machine room space, compared with the traditional elevators, under the premise of ensuring the repairers operation space which is stipulated by the national standard, it effectively controls the machine room height. The intensive space effect grants more freedom for the architects. It expands the larger space utilization to the construction, perfectly merges the well space with the architectural style. The elevators are applicable to office buildings, hotels and supermarkets.