The invention relates to a load-sensitive multi-way valve and a hydraulic system of an engineering machine. The load-sensitive multi-way valve comprises a head link and a tail link as well as one or more than one reversing link connected between the head link and the tail link. The load-sensitive multi-way valve further comprises a main oil inlet, a first oil return port and a main load feedback oil port. Each reversing link comprises a reversing valve, a pressure compensation valve of the reversing link and a one-way valve of the reversing link. Each pressure compensation valve of the reversing link communicates with a main oil inlet and an oil inlet of each reversing valve. A working oil port of each reversing valve communicates with an execution mechanism. An oil return port of each reversing valve communicates with the first oil return port. A one-way valve of each reversing link communicates with the main load feedback oil port and a load feedback oil port of each reversing valve. A first oil channel of a spring cavity communicating with a pressure compensation valve of each reversing link is connected beside an oil channel where a one-way valve of each reversing link communicates with a load feedback oil port of each reversing valve. The load-sensitive multi-way valve and the hydraulic system of the engineering machine adopt modularization design with simple oil channels in the interior and have high expandability.