According to the present disclosure, a manufacturing method of a solid copper-carbon catalyst includes the following steps: a copper precursor solution is provided, a spraying step is performed, a drying step is performed and a calcining step is performed. The copper precursor solution includes a copper precursor, a carbon carrier and a first solvent. In the spraying step, the copper precursor solution is dispersed to form a plurality of copper precursor drops. In the drying step, the copper precursor drops are dried to form a plurality of copper precursor powders. In the calcining step, the copper precursor powders are calcined to form a plurality of solid copper-carbon catalysts. Therefore, the solid copper-carbon catalyst produced by the present disclosure has lower manufacturing cost, and is favorable for large-scaled manufacturing process. Also, the solid copper-carbon catalyst can be removed without complicated purification steps after catalysis. |