The invention discloses a communication base station signal tower in optimized structure. A base is fixedly provided with a tower column of the signal tower. The lower end of the tower column is plugged and fixedly provided with a plurality of connecting supports. The connecting support is formed by a ferrule and a plurality of bracing pieces. The inner ends of the bracing pieces are welded and fixed on the ferrule and are uniformly distributed on the ferrule in an annular shape. A wallboard is arranged between adjacent bracing pieces. The wallboard is welded and fixed on the outer end of the bracing piece. Any wallboard is provided with an inlet and is provided with a door body. The upper end of the wallboard is fixedly provided with an inclined weather-shield. Adjacent weather-shields are fixed together. The inner side edge of the weather-shield is abutted against the tower column. The outer side edge of the weather-shield is fixedly connected with a nail plate. The inner side of any weather-shield is provided with a channel. A cover plate is arranged in the channel. The cover plate is hinged on the weather-shield which is provided with the channel through a hinge. The bottom of the signal tower is provided with a protection device, preventing climbing of non-staff, and preventing safety accidents caused by climbing of non-staff.