Lead-barium silicate is a typical composition of faience and glass in ancient China. In this paper, we firstly declare that lead-barium silicate products consist of lead-barium glazed pottery, lead-barium faience, lead-barium glass and copper barium silicate pigment, and mainly focus on the former three and further point out that it is not appropriate to use “lead-barium glass” to refer to all types of lead-barium silicate products. Then we summarize the excavation sites and times of lead-barium silicate products of the Warring States Period, and re-review the opinions that lead-barium faience is the precursor of lead-barium glass. Based on these works, we propose that lead-barium glazed pottery and faience are not the pioneers of lead-barium glass, and that the emergence of these three lead-barium silicate products in the early Warring States Period is more likely the application of new lead-barium fluxes to different materials.