CONDENSED FINANCIAL INFORMATION OF THE PARENT COMPANY - CONDENSED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME (Details) - USD ($)	12 Months Ended
Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
PARENT COMPANY CONDENSED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME
General administrative expense and others	$ (26,452,637)	$ (9,928,512)	$ (5,816,130)
Impairment on long-term investments	(29,189,836)	0
NET (LOSS) INCOME ATTRIBUTABLE TO HEXINDAI'S SHAREHOLDERS	(71,198,379)	5,532,581	65,481,973
OTHER COMPREHENSIVE INCOME
Foreign currency translation adjustment	(5,288,742)	(6,136,187)	6,028,143
COMPREHENSIVE (LOSS) INCOME ATTRIBUTABLE TO HEXINDAI'S SHARESHOLDERS	(76,487,121)	(603,606)	71,405,954
Parent Company \| Reportable Legal Entities
PARENT COMPANY CONDENSED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME
Equity in earnings of subsidiaries, VIEs and VIEs' subsidiaries	(35,994,910)	14,725,415	68,117,762
General administrative expense and others	(6,013,633)	(9,192,834)	(2,607,137)
Impairment on long-term investments	(29,189,836)
NET (LOSS) INCOME ATTRIBUTABLE TO HEXINDAI'S SHAREHOLDERS	(71,198,379)	5,532,581	65,510,625
OTHER COMPREHENSIVE INCOME
Foreign currency translation adjustment	(5,288,740)	(6,136,187)	6,028,143
COMPREHENSIVE (LOSS) INCOME ATTRIBUTABLE TO HEXINDAI'S SHARESHOLDERS	$ (76,487,119)	$ (603,606)	$ 71,538,768

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Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line.

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The amount by which the fair value of an investment is less than the amortized cost basis or carrying amount of that investment at the balance sheet date and the decline in fair value is deemed to be other than temporary, before considering whether or not such amount is recognized in earnings or other comprehensive income.

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Amount after tax of income (loss) of subsidiary attributable to the parent entity.

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Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.

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