The invention discloses an engineering machine and a detection control apparatus for the oil contamination level of the engineering machine. The detection control apparatus comprises a receiver and a controller, wherein the receiver receives a control instruction and related data information about contamination of oil located in a to-be-detected oil way and flowing through a to-be-detected point, the controller is used for controlling the on-and-off states of a plurality of first switching devices according to the control instruction so as to allow the oil in the to-be-detected oil way to flow through the to-be-detected point and oil in other oil ways not to flow through the to-be-detected point, which enables related data information about contamination of the oil flowing through the to-be-detected point to be detected, the plurality of first switching devices are arranged at the upper stream of the to-be-detected point, each of the plurality of first switching devices controls opening and closing of one oil way, and the controller also acquires oil contamination information of the oil way according to the data information, so detection cost is reduced.