Quarterly report pursuant to Section 13 or 15(d)

Document and Entity Information

Document and Entity Information - shares
3 Months Ended
Mar. 31, 2021
May 07, 2021
Cover [Abstract]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Mar. 31, 2021  
Document Fiscal Year Focus 2021  
Document Fiscal Period Focus Q1  
Trading Symbol XBIO  
Entity Registrant Name Xenetic Biosciences, Inc.  
Entity Central Index Key 0001534525  
Current Fiscal Year End Date --12-31  
Entity Filer Category Non-accelerated Filer  
Entity Common Stock, Shares Outstanding   8,746,692
Current Reporting Status Yes  
Entity Small Business true  
Entity Emerging Growth false  
Entity Interactive Data Current Yes  
Entity Shell Company false  
Entity Incorporation State Country Code NV  
Entity File Number 001-37937  
Security 12g Title Common Stock, $0.001 par value per share