Abstract: The design of a high performance short-period wiggler is introduced, Tunableness to magnetic field in half period length has been achieved by slot location of separate permanent magnet. The measurements for the wiggler mockup show that our short-period wiggler performance include peak value of magnetic field B_W=0.35T with it' s period λ_W= 10mm and space between magnets δ = 5mm, relative maxium deviation of magnetic field δB_W/B≤ 1.25%.