A method of allocating an uplink data packet resource and a user equipment are provided, and the method includes: receiving at least one UL grant sent by a network device; determining, according to Logical Channel Prioritization LCP restriction corresponding to a target object, correspondence relationship between the target object and the UL grant; and performing resource allocation on each UL grant according to the correspondence relationship between the target object and the UL grant; wherein, the LCP restriction includes at least mapping relationship between the target object and a type of UL grant, and the target object is a service type or a logical channel or a logical channel group.