First, one of the most common problems is the problem of deceit. People will create fake identities, use fake photos, and some may even be a love swindler who bilks for money and love. Through their survey investigation, Kaspersky Lab and B2B International (2017) found that 57% of the responders admitted that they once lied on online dating sites, ranging from names, marital status, location to appearance. From their survey, we can tell that many people tend to make a completely fake identity with perfect self-introduction and good-looking pictures they capture from the internet instead of revealing their true information and using their own photos, which can make themselves seem more appealing so that they can get more chances to pair up with other users. As they successfully match with others, they will try their best to show their flawless side to make you into their discourse and start to trust them. Afterwards, you may easily do whatever they say. For example, they may claim that they are into financial trouble and ask for your help. That’s how people fall into a trap without noticing. So, in order to avoid being deceived, the most feasible way we found is to stay alert to any abnormal phenomenon occurring in the dating apps. To further explain, there are three concrete ways for you to apply, including avoiding connection with suspicious profiles or block and report suspicious members, not responding to requests for financial help or other unreasonable questions, and always stay alert and be skeptical about other users' personal information or chats. For instance, they seem to be too good to be true. According to our survey, some of the respondents reported that if you don’t reply to them, they will keep asking the same question next time (Figure 2). In response to this problem, following our solutions above helps get rid of trouble. As long as people stop being in touch with doubtful users, they won’t be in an annoying situation of replying to the unusual requests. Having an objective attitude and not easily trusting others are also effective ways to deal with the problem of deceit. However, 55.2% of our respondents argued that it is difficult to discover the suspicious point, while others thought (40%) that people will completely trust or have a crush on him/her after a few chats (Figure 2). Indeed, sometimes it is not obvious to find out people’s lie, but whenever someone texts inappropriate or nonsense messages, you will have a sense and be aware of their unusual conversation. Researchers have found that most of the liars get higher scores on the measures of Machiavellianism (Kashy & DePaulo, 1996) and psychopathy (Halevy, Shalvi & Verschuere, 2014). Machiavellianism is characterized by manipulation, callousness and indifference to morality, while people who have psychopathy are considered sociopaths whose behaviors are bold and disinhibited because of their impaired empathy and remorse. With these traits, you can more or less detect some signs. Furthermore, when they only provide one picture or have more than one account with the same pictures shown on their profiles, then you must notice that they possibly use others’ photos and should be more careful when swiping them. More importantly, you still need to be careful even after several chats since they may use it as a mean to bring you to the lure. As a result, it is important to stay alert under any circumstances.