This paper presents the visible-fluorescence method for the measurement of the total tritium quantity in ICF target. As a nondestructive method, it may be used not only in the measurement of direct-drive targets, but also in the monitoring of wide variety of indirect-drive cavity targets. Basing on the practically measuring results of obtained on “shenguang” in 1992, this paper gives a tentative plan for application of this method in the measurement of DT quantity in plastic targets and the scale factors which are needed in the case of absolute measurement, especially the importance and necessary of development of high sensitivity fluorescence negative or detectors.