The invention discloses a process for extracting and washing
cyclohexane oxime. The process comprises the following steps of: extracting an extractant and
aqueous solution of
cyclohexane oxime in a weight part ratio of 1:1 to 2:1 at the temperature of between 45 and 55 DEG C; washing an organic phase obtained by the extraction with desalted water when the
mass concentration of the
cyclohexane oxime is less than 1 percent so as to remove salt ions in the cyclohexane oxime solution; mixing a water phase obtained after washing and a water phase obtained by extraction, and extracting the mixture by using a cyclohexane or
hexane extractant in a weight part ratio of 0.5:1 at the temperature of between 45 and 55 DEG C so as to recycle the cyclohexane oxime in the mixture; and sequentially performing hydraulic
cyclone separation and gravity
settling separation on the washed organic phase when the
mass concentration of the salt ions in the organic phase is less than 0.0001 percent so as to obtain the cyclohexane oxime. The process does not need a rectification process; the purity of the obtained cyclohexane oxime is high;
beckmann rearrangement can be directly performed in the next process so as to prepare
caprolactam; and for 100,000 t / a of
cyclohexanone oxime devices, the process can save one-time equipment investment by about 20 to 30 million and can reduce
energy consumption such as water,
electricity, steam and the like by about 30 to 40 million.