v3.26.1
Cover - shares
6 Months Ended
Jun. 30, 2026
Jul. 24, 2026
Document Information [Line Items]    
Document Type 10-Q  
Document Quarterly Report true  
Document Transition Report false  
Entity Interactive Data Current Yes  
Amendment Flag false  
Document Period End Date Jun. 30, 2026  
Document Fiscal Year Focus 2026  
Document Fiscal Period Focus Q2  
Entity Registrant Name NEXT TECHNOLOGY HOLDING INC  
Entity Central Index Key 0001784970  
Entity Tax Identification Number 84-4948289  
Current Fiscal Year End Date --12-31  
Entity Current Reporting Status Yes  
Entity Filer Category Non-accelerated Filer  
Entity File Number 001-41450  
Entity Shell Company false  
Entity Emerging Growth Company true  
Entity Ex Transition Period false  
Entity Small Business true  
Entity Incorporation, State or Country Code WY  
Entity Address, Address Line One 1376-7 OBA  
Entity Address, Address Line Two SAITAMA PREFECTUREGRANDAGE 3  
Entity Address, City or Town KASUKABE CITY  
Entity Address, Country JP  
Entity Address, Postal Zip Code 344-0021  
City Area Code +81  
Local Phone Number 7094081304  
Entity Address, Address Line Three TAKEBASHI 408  
Entity Common Stock, Shares Outstanding   147,296,192
Title of 12(b) Security Common Stock, $0.0000 par value per share  
Trading Symbol NXTT  
Security Exchange Name NASDAQ