The invention provides a control valve group for a harvester and belongs to the technical field of hydraulic pressure. According to the control valve group for the harvester, the problem that combining of electronic control and mechanical control is difficult to achieve through a hydraulic system is solved. The control valve group for the harvester comprises a valve body. The valve body is provided with an oil inlet connector and an oil return connector. A first electromagnetic directional valve, a second electromagnetic directional valve and a third electromagnetic directional valve are fixed to the valve body. The valve body is internally provided with a flow divider valve which divides an oil circuit into a first control oil circuit and a second control oil circuit. The first control oil circuit communicates with an oil inlet of the first electromagnetic directional valve. A first connector communicating with an oil return opening of the first electromagnetic directional valve is arranged on the valve body. A second connector communicating with the second control oil circuit is arranged on the valve body. A secondary oil inlet is formed in the valve body. The valve body is internally provided with a secondary oil inlet circuit communicating with the secondary oil inlet. The second electromagnetic directional valve and the third electromagnetic directional valve are connected to the secondary oil inlet circuit in series. The valve body is provided with a third connector communicating with an oil return opening of the third electromagnetic directional valve. The secondary oil inlet circuit and the second control oil circuit can communicate with each other or can be blocked.