The invention provides a portable hydraulic oil particle and 
moisture detection device, characterized in that: the device comprises a bidirectional 
plunger pump (8), an automatic particle counting sensor (10), and a 
moisture sensor (12) connected with an oil outlet 
pipe, and the bidirectional 
plunger pump (8), the automatic particle counting sensor (10) and the 
moisture sensor (12) are successively connected through 
high pressure flexible pipes; the device is provided with an embedded microprocessing 
system (11), the embedded microprocessing 
system (11) is connected with the 
moisture sensor (12), a display screen and a printer through 
data lines; a motor-driven electric device (9) controls the bidirectional 
plunger pump (8) to work. The portable hydraulic oil particle and moisture detection device overcomes the problem that a hydraulic oil 
detector only can detect particle or moisture, combines off-line and one-line application together, can be directly accessed in a hydraulic 
system to realize the simultaneous detection of hydraulic oil particle and moisture, and has the advantages of convenient operation, high precision, lasting stability, and the like.