Abstract: The second item of Article 32 of the Barrier-Free Environment Construction Law is ambiguous in terms of semantic scope and lacks the normative character that the law should have, which makes it difficult to promote the full implementation of the obligation for platform information accessibility environment construction. This obligation of the platform should be legal and mandatory in the due state, and its logic lies in the fact that the information power of the platform driven by self-interest is easy to disintegrate and cause negative effects. So it is necessary to strengthen the restrictive effect of information power by increasing legal obligations. The main dilemma faced by the specific allocation of platform obligations needs to be solved by introducing the “minimum core obligation theory”, which can set a benchmark for the specific allocation of platform obligations, provide a supplementary perspective for the optimization of the implementation path of platform obligations, and extract the principle of bottom line demand and reasonable burden principle as the basic principles of platform obligation allocation.Under the constraints of the current system, the implementation of platform obligations should focus on the minimum core obligations and build a soft law implementation mechanism. In the long run, it is necessary to move towards a comprehensive promotion path combining the soft and the hard mechanisms, and open administrative penalties and private lawsuits.