Modern Healthcare Systemsare Based on Managing Diagnostic Information of Patients In a Digital Way. Toguarantee the Security, Authenticity and Management of Medical Images Andinformation Through Storage and Distribution, the Watermarking Techniques Areused. This Research Aims at Developing a Watermarking Technique In Waveletdomain Which Uses the Electronic Health Record (Ehr) As Watermark and Hospitallogo As the Reference Image.