Annual report pursuant to Section 13 and 15(d)

Cover

v3.22.1
Cover - USD ($)
 12 Months Ended
Dec. 31, 2021
Mar. 18, 2022
Jun. 30, 2021
Document Type 10-K    
Amendment Flag false    
Document Annual Report true    
Document Transition Report false    
Document Period End Date Dec. 31, 2021    
Document Fiscal Period Focus FY    
Document Fiscal Year Focus 2021    
Current Fiscal Year End Date --12-31    
Entity File Number 001-37937    
Entity Registrant Name XENETIC BIOSCIENCES, INC.    
Entity Central Index Key 0001534525    
Entity Tax Identification Number 45-2952962    
Entity Incorporation, State or Country Code NV    
Entity Address, Address Line One 40 Speen Street    
Entity Address, Address Line Two Suite 102    
Entity Address, City or Town Framingham    
Entity Address, State or Province MA    
Entity Address, Postal Zip Code 01701    
City Area Code 781    
Local Phone Number 778-7720    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Non-accelerated Filer    
Entity Small Business true    
Entity Emerging Growth Company false    
Entity Shell Company false    
Entity Public Float     $ 17,462,218
Entity Common Stock, Shares Outstanding   13,441,296  
Auditor Firm ID 688    
Auditor Name Marcum LLP    
Auditor Location Boston, Massachusetts    
Common Stock, $0.001 par value per share      
Title of 12(b) Security Common Stock, $0.001 par value per share    
Trading Symbol XBIO    
Security Exchange Name NASDAQ    
Purchase Warrants      
Title of 12(b) Security Purchase Warrants    
Trading Symbol XBIOW    
Security Exchange Name NASDAQ