not-yet-known not-yet-known not-yet-known unknown High monetary investments and information asymmetry of non-monetary investment make the supply of green agricultural products unable to meet market demand. Application of Blockchain of Things (BoT) has provided a possible solution. This article constructs a supply chain composed of an enterprise, a bank, and a farmer with limited funds, and studies the value of BCT in green agricultural supply chain financing. Two aspects of changes after the introduction of BCT are considered: traditional purchase order financing (TPOF) requires fixed assets as collateral to obtain a loan, while BoT-based purchase order financing (BPOF) can use liquid assets; under the asymmetric information of non-capital investment efficiency, TPOF use price as the transmission signal, but BPOF uses farmer’s greening investment. The results show that under information symmetry, BPOF allows the farmer with high financing needs to participate in the green agricultural supply chain if the price of traditional agricultural products is high, and redistributes the profits if the price of traditional agricultural products is moderate and the financing needs is low. When there is uneven information, BPOF can help the enterprise by sharing information. This article also shows that TPOF is better than BPOF when traditional agricultural product price is very low.