[8] On 20 January 2019, Pinduoduo reported to the police theft by hackers that exploited a loophole in their system and stole tens of millions of Yuan worth of vouchers.

[9] During the initial COVID-19 lockdown in China in 2020, Pinduoduo started a program to assist rural Chinese farmers with selling their produce to customers online instead of relying on traditional in-person marketplaces.

[18] After it was listed on the U.S. Nasdaq stock exchange in 2018, China's State Administration for Market Regulation announced probes into the firm based on reports of counterfeit materials available on the platform.

[17]: 208 In April 2019, Pinduoduo was first named in the Office of the United States Trade Representative's list of Notorious Markets for Counterfeit Products and Piracy.

[23] The company also disclosed that it had removed 500,715 items and closed more than 40 stores as of February 4, 2020, to protect consumers from counterfeit and substandard masks being sold by merchants hoping to profit amid the COVID-19 pandemic.

[28] Pinduoduo maintains a data sharing agreement with a unit of the People's Daily, the official newspaper of the Central Committee of the Chinese Communist Party.