The study was carried out to assess the feasibility of implementing text messaging system to support smoking cessation smokers in Hanoi. This was a pilot study done on 40 smokers in Hanoi. The participants received short message service texting within 6 weeks to get smoking cessation support. The study was an intervention one which compared the participants’ smoking before and after the intervention done. The participants were interviewed directly with a questionnaire that includes the following contents: suitability of number/ content of messages, frequency/ time of sending messages, use of received messages, interaction with the program, satisfaction with the messaging system, and change in smoking behavior.