The invention relates to an anti-lag alarm method for vehicle-mounted ECALL equipment, and the method comprises the following steps: enabling the ECALL equipment to call out an alarm call after the ECALL equipment is triggered, checking whether the ECALL equipment can be connected with an external network or not, and obtaining the data information of a current state at the same time according to aset data collection rule, wherein the data information at least comprises vehicle positioning information; when the external network is connectable, starting the network transmission module to encrypt and send the data information to the emergency data platform; when the external network cannot be connected, sending the data information to the emergency data platform in a short message mode; enabling the emergency data platform to perform aggregation processing on the network information and the short message information sent by the same ECALL device, and send the information subjected aggregation processing to an alarm command center of a corresponding jurisdiction to which the current vehicle positioning information points. The communication can be completed at the first time, and meanwhile, the timeliness of information acquisition and uploading actions is not influenced, so that the timeliness of alarming and rescue can be guaranteed, and the safety coefficient is higher.