The invention discloses a movable marine environment monitoring system comprising a container box. A pretreatment area, a test analysis area, a central control area and a gas supply area are arrangedin the container box. A sliding door is arranged between the test analysis area and the pretreatment area; a first partition board for isolation is arranged between the test analysis area and the central control area; and a second partition board for isolation is arranged between the central control area and the gas supply area. Watertight doors are arranged at the pretreatment area, the central control area, and the gas supply area. A sample feeding window is arranged at the pretreatment area; a first earthquake-proof reservoir suspension cabinet, a first earthquake-proof experiment bench, aventilating cabinet, a refrigerator and a freezer are arranged in the pretreatment area; an experimental water system, a seawater suction filtration system, an experimental water tank, an experimentalwater pump, a faucet and an emergency eye wash device are installed at the first earthquake-proof experiment bench; and the experimental water system includes a domestic water tank, a pollution tank,a sewage tank and a distilled water bucket.