Abstract: Abstract:This article had studied the situations of the mustard family's seed sprouting and its seedling growing and the content of chlorophyll in its seedling in different concentration of lead stress, the conclusion of study had indicated lead stress on the mustard family's seed sprouting is that the low concentration of lead has activation but the high concentration of lead has check effection; And the conclusion of study had indicated lead stress on the mustard family's seedling growing is that the low concentration of lead has activation in the start time ,but then it turn to check effection with the lapse of time. The conclusion of study had indicated lead stress on the root growing of the mustard family's seedling is obvious check effection. The conclusion of study had indicated lead stress on the seedling growing of the mustard family's seedling is the pernicious effects of lead had embodied even more big check effection to seedling growing than to seed sprouting.