We present a field robot platform HRP2G with humanoid upper body and a high power mobile wheeled base that focus on outdoor tasks. We assemble the hardware of both parts and create a software bridge between the humanoid upper body and the mobile wheeled base through popular robotics software ROS. For the humanoid upper body, we use HRP2 robot and for the mobile wheeled base we buy individual parts and create our own control unit with both hardware and software. The kinematics of the robot is well modelled and we design the corresponding control law. We will apply this robot platform to participate in the second task of MBZIRC(Mohamed Bin Zayed International Robotics Challenge) in 2017. In the experiment we show how our platform accomplished certain tasks with customize designed gripper and sensor equipments, which demonstrates the feasibility of our integrated system.