The work aims to reduce the porosity of the pattern prepared by silver nanoparticle ink and improve the conductivity of the pattern. In this paper, silver nanoparticles/silver ion composite ink was prepared by mixing multi-sized silver nanoparticles with silver ions solution. The surface morphology of the pattern was observed by scanning electron microscopy (SEM). The crystal structure of the surface was examined by x-ray diffractometer (XRD), and the electrical resistivity of the pattern was also measured. Experimental results showed that the ratio of the silver nanoparticles to the silver ion greatly affected the pattern conductivity. The composite ink with volume ratio of AgNPs∶Ag+=2∶1 obtained the best conductivity after drying, with the electrical resistivity of 1.33×10−3 Ω.cm. The silver content of the ink was only about 4.37 wt%. After hot-press sintering, the composite ink with volume ratio of AgNPs∶Ag+=5∶1 had the best electrical resistivity of 1.32×10−4 Ω.cm. The silver content in the ink was only about 3.19 wt%. The pattern prepared by the composite ink was conductive after drying, and shows higher conductivity after hot-press sintering. The silver nanoparticle-silver ion composite ink prepared in this work has low silver content, which could greatly reduce the cost of applying it in flexible devices.