Due to the demand of complicated-time-shape seed laser pulse for inertial confine fusion (ICF) research, by using the pulse-shaping system based on aperture-coupled striplines, we design the front-end laser pulse temporal waveform, which totally meets the requirement of physical experiments. Besides, we precisely calculate the numerical relationship between the voltage coupling coefficient of the aperture-coupling striplines and its aperture width with a new method. In order to meet the demand of high-contrast laser pulse waveform, we put forward a new scheme based on double-electrode integrated wave-guide modulator. The system is capable of providing 1～3 ns pulse envelope, high contrast (>100∶1) and slippery waveform, meeting the “ShenGuang Ⅱ” eight lines and the ninth facility demand of the front-end temporal shaping laser pulse.