The invention relates to the technical field of pottery, and particularly relates to a wood-grain pottery glaze, and a process for preparing a pottery product by using the same. The wood-grain pottery glaze comprises the following components by weight: a bottom glaze comprising 43%-47% of potassium feldspar, 4%-6% of No. 1 clinker, 19%-21% of barium carbonate, 4%-6% of limestone, 4%-6% of calcined talcum, 9%-11% of Longyan kaolin, 9%-11% of titanium oxide and 1%-3% of vanadium yellow; a top glaze comprising 28%-32% of potassium feldspar, 39.9%-43.7% of No.2 clinker, 11%-13% of wollastonite, 5%-6% of Longyan kaolin, 10%-12% of pigments and 0.1%-0.3% of carboxymethyl cellulose. The process can overcome the problem that dissolution quantity of lead and cadmium exceeds a standard, reduces steps and labor cost, greatly increases yield of products, and saves production cost.