Abstract: Single slanted tower frame is less used in communication field, and with the continuous development of communication industry and urban construction, the height of communication tower is getting lower and lower,and the floor area is getting smaller and smaller,these changes have made it possible for single slanted system to be applied to communication towers,by comparing the different characteristics of the single diagonal three-tube tower and ordinary three-tube tower,discover the advantages and regular pattern of the single-slanted three-tube tower. Therefore, select the reasonable tower type in engineering.

Key words: single slanted tower frame, the structural system, three-tube tower