Prepayments and Other Assets, Net (Details) - CNY (¥) ¥ in Thousands	Jun. 30, 2026	Dec. 31, 2025	Jun. 30, 2025
Prepayments and Other Assets, Net [Line Items]
Allowance for doubtful accounts	¥ 33,936	¥ 32,664
Other deposits	3,959	3,959	¥ 3,959
Other receivables allowance for credit losses	¥ 10,503	¥ 10,503

The amount of allowance for doubtful deposits with real estate developers.

No definition available.

Name:	duo_AllowanceForDoubtfulDepositsWithRealEstateDevelopers
Namespace Prefix:	duo_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The amount of allowance for doubtful rental and other deposits.

+ References

No definition available.

+ Details

Name:	duo_AllowanceForDoubtfulRentalAndOtherDeposits
Namespace Prefix:	duo_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The valuation allowance as of the balance sheet date to reduce the gross amount of receivables to estimated net realizable value, which would be presented in parentheses on the face of the balance sheet.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481962/310-10-50-4

+ Details

Name:	us-gaap_AllowanceForDoubtfulAccountsPremiumsAndOtherReceivables
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_LoansAndLeasesReceivableDisclosureLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration