Influence of constant magnetic field on polymer adhesives is studied. Increase of cohesive and adhesive strength of adhesive joints formed on magnetically treated adhesives is established. By electron and x-ray studies the ordering of the structure and the convergence of the structural elements of the polymer base of adhesives under the influence of magnetic field are shown. Decrease of internal stresses in the adhesive compounds based on magnetically treated adhesives is revealed. The effect of wetability increasing of magnetically treated adhesive to the surface substrate is experimentally established.