A new crystal of helminth glutathione S-transferase, 28 kDa isozyme from Clonorchis sinensis has been grown from a 20% PEG MME 550 solution containing 50 mM $CaCl_{2}$ in 0.1 M bis-Tris buffer (pH 6.5) in $2{sim}3$ days. The crystals diffract to $3.0{AA}$ resolution and belong to the orthorhombic space group $P2_{1}2_{1}2_{1}$ with cell parameters $a=62.58{AA},;b=69.92{AA},;and;c=339.67{AA}$.