Due to the bribery of pharmaceutical companies in 2013, stakeholders had lost benefits. In this research, we conduct 218 questionnaires to compare perception between pharmaceutical companies, doctors, and the public, and aim to reveal the incentives for pharmaceutical companies to disclose information. The results showed that pharmaceutical companies and the public viewed information disclosure as corporate social responsibility, while doctors viewed it as for market share. In pharmaceutical companies’ opinion, the main reasons for the insufficiency of information disclosure were as following: 1. information sensitivity, 2. to avoid disclosing secret, 3. stakeholders’ low demand. The results of this research would be a reference for government to establish policy and for pharmaceutical companies to draft plans, and could promote the safety of medical treatment and the interests of consumers.