We made soft X-ray lens and combined it with high-temperature plasma radiation which was produced on Qiang-Guang Ⅰ facility. The transmission characters of lens were measured. It is shown that, for the lens manufactured of 2401 X-ray capillaries, when the power density of the incident soft X-ray is 1.0×10⁸ W/cm², the average transmission efficiency of lens is 9.6%, and the power density 1.15×10⁹ W/cm² of soft X-ray source without plasma fragment can be obtained at focal point.