Using the combination of Gaussian monocycles pulse with different amplitude and different delay,a new ultra-wideband (UWB) pulse design algorithm for Inband (narrowband or wideband) interference suppression is presented. With a Wireless Personal Area Network(WPAN) Communications short duration and a simple implement,the obtained UWB pulse not only meet Federal Communications Commission (FCC) spectral mask,but dramatically suppress the mutual interferences and successfully solves the coexistence problem between UWB system and others existing communication system. Compare with other pulse shapes,our pulse can carry more energy. In the end,the communication performance of the UWB pulse in the paper and the optimal Gaussian-based monocycle is compared,our pulse have an obvious advantage over the optimal Gaussian-based monocycle.