The invention discloses an ultra-wideband conformal phased-array antenna beam control system and method. The system comprises an upper computer, a wave control machine, a power divider, a conformal phased array antenna and a vector network, wherein a first input end of the wave control machine is connected with the upper computer and calculates and generates a control signal according to an information instruction, a first input end of the power divider is connected with an output end of the wave control machine to generate a combined control signal, an input end of the conformal phased-arrayantenna is connected with a first output end of the power divider, an output end of the conformal phased-array antenna is connected with a second input end of the power divider, phase shift setting iscarried out, spatially superimposed echo signals are received, an input end of the vector network is connected with a second output end of the power divider and receives echo signals transmitted by the power divider. The system is advantaged in that the system solves a problem of multi-beam pointing control of the conformal phased-array antenna distributed on a non-planar carrier, changes different directions of a main beam pointing space of the antenna in real time, and realizes rapid, large-wide-domain and high-precision electronic scanning of conformal phased-array antenna beams in an airspace.