Smart materials that can respond to external stimuli,such as light,heat,chemicals,electric and magnetic fields,have attracted considerable attention for their fascinating properties and potential applications. Liquid crystalline elastomer is a mesogen-containing network formed by lightly crosslinked polymer chains and is particularly useful for sensors and actuators.It is also possible to prepare liquid crystalline elastomer from self-assembling of the liquid crystalline block copolymers. This thesis focuses on the research of liquid crystalline elastomer and block copolymer with stimuli-responsive properties, including their synthesis,characterization and stimuli-responsive properties.