Subsequent Events (Details) - Subsequent Event [Member]		1 Months Ended
	Aug. 13, 2021	Aug. 31, 2021	Jul. 01, 2021
Subsequent Events (Details) [Line Items]
Equity interest owned, percentage			100.00%
Subsequent event, description	the Board of Directors (the “Board”) of Sino-Global Shipping America, Ltd. (the “Company”) and the Compensation Committee of the Board (the “Committee”) approved a one-time award of a total of 1,020,000 of the common stock from the shares reserved under the Company’s 2014 Stock Incentive Plan (the “Plan”) to (i) Chief Executive Officer, Lei Cao, is entitled to a one-time stock award grant of 600,000 shares, (ii) acting Chief Financial Officer, Tuo Pan, is entitled to a one-time stock award grant of 200,000 shares, (iii) Board member, Zhikang Huang, is entitled to a one-time stock award grant of 160,000 shares, (iv) Board member, Jing Wang, is entitled to a one-time stock award grant of 20,000 shares, (v) Board member, Xiaohuan Huang, is entitled to a one-time stock award grant of 20,000 shares, and (vi) Board member, Tieliang Liu, is entitled to a one-time stock award grant of 20,000 shares. Fair value of these grants at grant date was approximately $3.0 million
Joint venture , description		the company formed a joint venture, Phi Electric Motor, Inc. in New York, which is 51% owned by Sino-Global Shipping New York Inc.