PURPOSE: A method for manufacturing gas hydrate and a gas hydrate reaction and Raman peak measuring unit are provided to generate easily producible and storable gas hydrate using a guest element, a host element, tetrahydrofuran, and montmorillonite. CONSTITUTION: A method for manufacturing gas hydrate includes the following: a composition containing a guest element, a host element, tetrahydrofuran, and montmorillonite is prepared; and the composition is stirred to obtain gas hydrate. The guest molecule is hydrogen, and the host molecule is water. The concentration of the tetrahydrofuran is between 0.63 and 1.26 mol%, and the concentration of the montmorillonite is between 1 and 5wt%. The temperature of the stirring process is in a range between -5 and 1.5 degrees Celsius, and the pressure of the stirring process is in a range between 70 and 90 bar. A gas hydrate reaction and Raman peak measuring unit includes a reactor(100) and a Raman probe(200). The reactor stirs the guest element and the host element to generate the gas hydrate. The Raman probe measures the Raman peak in the reactor.
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