I am a U.S. citizen about to marry a Jamaican citizen, I work and receive SSD. Can I fill for him w/o loosing my benefits?

You can petition for your spouse to receive an immigrant visa. Petitioning for a spouse has no bearing on whether you will continue to qualify for benefits. Whether you continue to qualify for benefits will depend upon the whether you still meet the eligibility requirements. You may find more information about family-based immigration at http://myattorneyusa.com/family-immigration.