There were neither available database nor deep investigation on gene patents or patented genes in China before. But the National Bio-Sequence Database of Chinese Patent (NASDAP, http://nasdap.generank.org/), comprising 123 218 patented bio-sequences within 8 563 Chinese patents, has been constructed now. Genes, microarrays, single nucleotide polymorphisms (SNPs), motifs and any other objects of Chinese patent are involved in, and BLAST-based search or motif scan are carried out to navigate these objects, which can serve as an indispensable bioinformatics platform for setting up of research work, tracing of the advancement in patented genes and facilitating the decision of both applicants and assigners of gene patent. Such platform also gives comprehensive consults on drawing intellectual property strategies in the areas of pharmaceutics, diagnostics and agriculture.