The present invention relates to a pharmaceutical composition for the prevention of liver dysfunction which contains arazyme as an active ingredient, more precisely a pharmaceutical composition for treating liver dysfunction which contains arazyme produced by Aranicola proteolyticus. The arazyme of the present invention inhibits apoptosis in injured liver cells, increases SMP30 expression, inhibits P-smad3 expression and protects liver by inhibiting liver injury around central vein region. Therefore, the arazyme of the invention can be effectively used as a pharmaceutical composition for the prevention of liver dysfunction.
