V2x communication apparatus for verifying reliability of v2x data, system having the same and method thereof

V2X communication apparatus according to an embodiment of the present invention, message transmission and reception unit for receiving a V2X communication message and transmits the data to the apparatus V2X vehicle; Parameter calculating section for calculating a reliability test parameters for the reliability test for the V2X data; Reliability level determining section for determining the confidence level as compared to the reliability verification parameter with a reference value determined in advance; And it may include the V2X, but generating the V2X data by using a communication message, generating the message for generating the V2X data including the determined confidence level portion.