Abstract: The protection of intellectual property on e-commerce platforms is the institutional consequence of the development of
domestic e-commerce, and the guarantee of transaction order of e-commerce through national intellectual property legal system. Based
on the intellectual property protection rules of e-commerce platforms stipulated in Chinas "E-commerce Law" and combining the good
faith doctrine in the civil legal system, it is of great significance for refining the protection of intellectual property rights in e-commerce
transaction order to clarify the institutional value of good faith doctrine in e-commerce through the analysis of system functions. The
good faith doctrine is the basic principle that guides the behavior mode of civil subjects and realizes the value of civil behavior, and has
an important legal status in the civil legal system. It coordinates the behavior patterns of different subjects in e-commerce transactions,
guides subjects to maintain transaction order based on good intentions, and builds a rational mechanism for balancing interests through
the protection of intellectual property.

Key words: good?faith?doctrine, ?intellectual?property?protection, ?e-commerce?platform, ?institutional?value