The invention discloses a double-cylinder and plate combined type ocean experimental platform and a collecting and deploying method thereof, and belongs to the technical fields of ocean survey and ocean engineering equipment. The ocean experimental platform is characterized in that components mainly adopt fiber reinforced plastics as the material; instruments and devices can be mounted on a working panel, and a good working environment is provided; cylinders are arranged on the two sides of the working panel; airbags are mounted in the cylinders; a plurality of U-shaped diaphragm plates are longitudinally arranged on the platform; the structure form is simple and novel, and the longitudinal bending strength and sit-on bottom stability can be guaranteed; the platform rising and falling is controlled through adjusting the inflating volume of the airbags, and the method is economic and convenient; handing points are arranged at the two ends of each cylinder; and besides, the double-cylinder and plate combined type ocean experimental platform is equipped with a floating transportation platform for operation assistance, so that the sinking process of the platform is guaranteed to be controllable, and the damage of instant impact to the structure during platform bottom resting is avoided. According to the platform, the structure form is novel, the weight is light, the manufacturing technology is simple, the magnetism resistance is good, the erosion resistance is high, and the platform is a reliable, multi-functional, efficient and economic bottom resting type ocean experimental platform.