Any process that increases the rate, frequency or extent of hydrogen peroxide biosynthesis. The chemical reactions and pathways resulting in the formation of hydrogen peroxide (H2O2), a potentially harmful byproduct of aerobic cellular respiration which can cause damage to DNA. (Gene Ontology, GO_0010729)
1 genes participating in the positive regulation of hydrogen peroxide biosynthetic process biological process from the curated GO Biological Process Annotations dataset.