1. A transaction processing method, a system consists of nodes, one node presenting a original coordinator and other nodes presenting participants, an object operated by a transaction is consisted of a plurality of sub-objects, wherein each participant owns a sub-object, comprising: electing a new coordinator from the system after a original coordinator cause failure, wherein the new coordinator is communicatively connected to participants; sending, by the new coordinator, a query message to each participant, wherein the query message carries a transaction ID, an object ID, and change information of the object, wherein the transaction ID is used to identify the transaction, the object ID is used to identify the object, the change information corresponds to content of the object, and content of the object with different change information is different; receiving, by the new coordinator, a response message for the query message from each participant; and drawing, by the new coordinator, a conclusion according to the response messages, executing, by the coordinator, the conclusion, and sending the conclusion to the participants, wherein the conclusion comprises at least one of the following: executing the transaction by the new coordinator if any one of the response messages carries a first information, wherein the first information indicates that the participant does not contain the transaction ID and contains the object ID, and the change information of the object in the participant is the same as the change information of the object in the coordinator.