Aircraft are public transportation, as are high-speed trains, buses, light rail, and subways. Smoking is not allowed on planes or other public transportation, and e-cigarettes are also prohibited. Please follow the rules when traveling on public transport
Airplanes are a form of public transportation, along with high-speed trains, buses, light rail, and subways. When using public transportation like airplanes, smoking is prohibited, and this includes e-cigarettes. Therefore, I remind everyone to adhere to regulations when using public transport.

1. Health Risks
The airplane cabin is a closed space with poor air circulation, which can lead to health risks. Smoking on board introduces many toxic and harmful substances and various additives that can contaminate the cabin environment.
2. Safety Risks
E-cigarettes are powered by batteries, and if a malfunction occurs, there is a significant risk. Reports indicate that a man in Santa Ana, Southern California, was using a modified e-cigarette in his bedroom when the device exploded. The explosion was severe, with fragments flying throughout the room, and a small piece embedded in the bedroom ceiling, igniting clothes on the bed. The man later had to receive treatment for his face and hands in the hospital, with a difficult recovery. This shows that if an e-cigarette explodes or catches fire in the cabin, the consequences could be dire. Moreover, the smoke produced by e-cigarettes could trigger the smoke detection system on the plane, causing panic among passengers and significant inconvenience to flight operations.
3. Legal Prohibitions
In 2015, the Civil Aviation Administration of China issued a notice that explicitly listed "smoking (including e-cigarettes)" as a prohibited behavior on aircraft. If passengers violate the notice, law enforcement will impose penalties according to the Civil Aviation Security Regulations of the People's Republic of China, which may include warnings, fines, or detention; if a crime is committed, criminal responsibility will be pursued according to the Criminal Law of the People's Republic of China; and if property damage occurs to individuals or units, compensation will be legally required.
Currently, the penalties for using e-cigarettes on airplanes are not limited to fines and detention of 5 to 10 days; there is also the possibility of being listed as a serious dishonest person, restricting the ability to board civil aircraft.
Cases of Using E-Cigarettes on Airplanes
On November 8, 2020, on flight SC4935 from Xiamen to Jingdezhen, a male passenger was allowed to proceed after being criticized and educated by security personnel for using an e-cigarette.
On January 22, 2020, on flight SC4706 from Zhuhai to Hefei, a passenger using an e-cigarette was handed over to law enforcement by the crew.
On September 5, 2019, on flight KN5911 from Beijing to Fuyang, Anhui, a man was found using an e-cigarette in the restroom by the crew. The Fuyang Airport Police Department imposed a 5-day administrative detention and confiscated the e-cigarette used in violation.
On July 13, 2019, Zhao was administratively detained for 5 days for using an e-cigarette in the restroom on flight 9C8710 from Osaka, Japan, to Yangzhou, Jiangsu.
On September 29, 2018, a passenger was administratively detained for 5 days for using an e-cigarette in the restroom on a flight from Hangzhou, Zhejiang to Changchun, Jilin.
On September 12, 2015, after flight CZ328 landed at Guangzhou Baiyun Airport, airport police took a male passenger away for investigation. It was reported that this passenger had used an e-cigarette during the flight, triggering the cabin smoke detector, and was subjected to 5 days of administrative detention.
丨Conclusion
E-cigarettes are still cigarettes, just with some differences from traditional ones, but places that prohibit smoking often also prohibit e-cigarettes.