Provided is a biodegradable laminate comprising a paper substrate layer and a thermoplastic resin layer, which is excellent in cooling roll peeling properties during production, has sufficient interlayer adhesive strength, and does not cause warpage in a TD direction. A biodegradable laminate comprising a paper substrate (a) layer, a first thermoplastic resin (B) layer containing PHBH as a main component, and a second thermoplastic resin (C) layer laminated in this order, wherein the B layer and the C layer satisfy the following requirements 1 and 2 at the same time: (Requirement 1) the B layer contains at least 1 or more kinds of crystalline components of 3-hydroxyhexenoate (3HH), And the ratio of the low crystalline PHBH component to the total amount of the PHBH component of the B layer is 50 wt perent or more (requirement 2) the C layer contains at least one high crystalline PHBH component in which...

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