Inventories (Details) - CNY (¥) ¥ in Thousands	12 Months Ended
Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Inventories [Abstract]
Provision/(reversal) of inventory reserves	¥ (220)	¥ 35	¥ 310

Represent the amount of reversal provision of inventory reserve.

No definition available.

Name:	bq_ReversalProvisionOfInventoryReserve
Namespace Prefix:	bq_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration