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Consolidated Statements of Comprehensive Loss - USD ($)
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Consolidated Statements of Comprehensive Loss      
Revenues $ 55,263,673 $ 42,283,670 $ 49,230,570
Cost of revenues 44,832,347 37,807,297 43,253,070
Gross Profit 10,431,326 4,476,373 5,977,500
Operating expenses      
Selling expenses 221,364 977,201 319,946
General and administrative expenses 8,831,407 955,210 4,655,382
Share based compensation 1,840,000 0 0
Impairment of goodwill and intangible asset 0 11,998,606 9,584,000
Research and development expenses 8,053,400 890,316 327,260
Total operating expenses 18,946,171 14,821,333 14,886,588
Loss from operations (8,514,845) (10,344,960) (8,909,088)
Other income (expenses)      
Interest income 117,735 50,732 53,060
Interest expense (740,400) (300,125) (443,262)
Rental income from related party 117,958    
Gain from sale property to a related party 545,874    
Other income (loss), net 210,176 (39,530) 3,669
Total other income (expenses) 251,343 (288,923) (386,533)
Loss before income tax expense (credit) (8,263,502) (10,633,883) (9,295,621)
Income tax expense (credit) 2,429,480 (611,655) 363,662
Net loss from continuing operations (10,692,982) (10,022,228) (9,659,283)
Discontinued operation:      
Income from discontinued operations, net of tax 0 0 270,479
Loss from disposal of discontinued operations 0 0 (569,891)
Net loss from discontinued operations 0 0 (299,412)
Net loss (10,692,982) (10,022,228) (9,958,695)
Less: net loss attributable to noncontrolling interest from continuing operations (2,334,853) (3,501,808) (3,601,728)
Net loss attributable to common stockholders of Tantech Holdings Ltd (8,358,129) (6,520,420) (6,356,967)
Net loss (10,692,982) (10,022,228) (9,958,695)
Other comprehensive income (loss):      
Foreign currency translation adjustment 2,535,599 5,892,311 (5,494,731)
Comprehensive loss (8,157,383) (4,129,917) (15,453,426)
Less: Comprehensive loss attributable to noncontrolling interest (2,363,473) (3,707,370) (3,571,880)
Comprehensive loss attributable to common stockholders of Tantech Holdings Ltd $ (5,793,910) $ (422,547) $ (11,881,546)
Loss from Continuing Operations, Per Basic and Diluted Share [1] $ (2.01) $ (2.21) $ (2.10)
Loss from Discontinued Operations and Disposal of Discontinued Operations, Per Basic and Diluted Share [1]     (0.10)
Loss per share - Basic [1] (2.01) (2.21) (2.20)
Loss per share - Diluted [1] $ (2.01) $ (2.21) $ (2.20)
Weighted Average Shares Outstanding - Basic, Continuing operations and discontinued operations [1] 4,148,737 2,956,624 2,885,324
Weighted Average Shares Outstanding - Diluted, Continuing operations and discontinued operations [1] 4,148,737 2,956,624 2,885,324
[1] Retroactively restated for one-for-ten reverse split with effective date of February 25, 2022.