Abstract: The infulences of light quality on the seed germination and seedling growth of okra were investigated by applying different treatment combinations of wavelength and strength to the seeds and seedlings of okra. The results showed that，the wavelength and strength of lighting had great impact on the seed germination of okra，the best effect of seed germination was revealed in the combination of 60 W red light and 20 W purple light. Compared with the control group，the treatment combination of 60 W red light and 20 W blue and white light could increase the height，the number of leaves，the leaf size，the dry weight and fresh weight signifcantly. Meanwhile，the combination of 60 W red light and 20 W purple light increased the stem diametre，and the combination of 60 W red light and 20 W blue and white light increased chlorophyll content effectively. For obtaining a better effect of okra seedling growth，the combined treatment of red light and bule light should be undertaken at night.