Quarterly report pursuant to Section 13 or 15(d)

Document and Entity Information

Document and Entity Information - shares
6 Months Ended
Jun. 30, 2015
Aug. 14, 2015
Document And Entity Information [Abstract]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Jun. 30, 2015  
Document Fiscal Year Focus 2015  
Document Fiscal Period Focus Q2  
Trading Symbol XBIO  
Entity Registrant Name Xenetic Biosciences, Inc.  
Entity Central Index Key 0001534525  
Current Fiscal Year End Date --12-31  
Entity Filer Category Smaller Reporting Company  
Entity Common Stock, Shares Outstanding   150,513,011
Current Reporting Status Yes  
Well known Seasoned Issuer No  
Entity Voluntary Filers Yes