The present invention relates to a process for producing a graphite oxide coating liquid in which the plate-like structure of graphite oxide is maintained by replacing water molecules on the surface of graphite oxide with a desired solvent without heat treatment, and a process for producing graphite oxide coatings based thereon. (A) oxidizing graphite to produce a water-based graphite oxide slurry; (b) preparing a solution in which an excess amount of an amphoteric solvent is added to the aqueous graphite oxide slurry; (c) providing molecular shock waves to said solution; (d) repeating the steps (b) and (c) two or more times to prepare a coating solution; And (e) adding an amount of cosolvent to the coating solution; Containing graphite oxide coating liquid, which is characterized in that it contains a " co-solvent containing graphite oxide coating liquid ".
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