The invention discloses method, system and device for switching load modes, and aims to solve the problem in the prior art that the user equipment (UE) needs long time from the request to the establishment of point-to-pint (PTP) service when switching from the current packet transfer mode (PTM) to the PTP mode. The method comprises: before the PTM is switched to the PTP mode, the UE reads the system information; and when needing to switch the load mode, the UE sends a PTP request according to the system information to establish RRC connection and wireless load, completing the switch from the PTM service to PTP service. The inventive RNC comprises a message sending unit, a MBMS service transfer unit, and a wireless load establishment message generation unit. The inventive UE comprises a system information read unit, a PTP service request message sending unit and an establishment unit. The inventive system comprises a UE and a RNC. The invention can shorten the time from the request to the establishment of PTP service.