General form of registration statement for all companies including face-amount certificate companies

Document and Entity Information

v3.5.0.2
Document and Entity Information - USD ($)
6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Document And Entity Information [Abstract]    
Document Type S-1/A  
Amendment Flag true  
Document Period End Date Jun. 30, 2016  
Document Fiscal Year Focus 2016  
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 4,909,685  
Current Reporting Status Yes  
Well known Seasoned Issuer No  
Entity Voluntary Filers Yes  
Entity Public Float   $ 9,500,000
Amendment Description S1-A5 with minor changes to June 2016 financials