Abstract: Dealing with the large thickness problem of electromagnetic cloaks, super-thin cloaks based on surface plasmon polariton (SPP) is proposed. By coupling incident electromagnetic waves as sub-wavelength SPP in the cloaking layer, incident electromagnetic waves are transfer to the shadowed region behind the cloaked object, so as to achieve cloaking effect. SPP coupler layer was designed using split-ring resonators and then is put on the surface of a metallic cylinder. In this way, a super-thin cloak sample was fabricated and then measured for comparison. The experiment results show that the cloak can achieve quite good cloaking effect with a thin thickness less than 1/30 the operating wavelength.