Fuente: Wipo "BigData" The invention provides a method and device for acquiring a user telephone number, a big data platform and network equipment, and relates to the technical field of communication. The method is applied to a big data platform and comprises the steps that a source address of an original data message sent by first network equipment is received, and the source address is acquired according to an uplink data message of a user terminal; sending a first request message used for acquiring the telephone number of the user to second network equipment; wherein the first request message carries the source address; and receiving a user telephone number corresponding to the user terminal sent by the second network device. According to the scheme, the problem that the telephone number of the user is difficult to capture in the prior art is solved.