The utility model discloses a vegetation lamp and vegetation system. Wherein, the vegetation lamp includes: power mechanism, laser control mechanism and semiconductor laser, wherein, semiconductor laser emission wavelength is 400nm-800nm's laser, laser control mechanism with semiconductor laser links to each other, is used for control the sharp light intensity and/or the time of semiconductor laser transmission, power mechanism with laser control mechanism links to each other, is used for doing the power supply of laser control mechanism. The utility model provides a vegetation lamp simple structure, economical and practical, the laser intensity and/or the time of transmission are adjustable, can satisfy the crop and in the growth phase of the difference demand to illumination intensity and light application time, promote vegetation, and reduction disease spread satisfies the vegetation photosynthesis requirement, has higher economy and social value.