A data transmission and control device in a multi-node sensor network, comprising a processing control module configured for data interaction, parameter configuration and firmware upgrade, the processing control module including an instruction processing unit, a data processing unit, at least one group of first-type interfaces (J101-J10n), at least one group of second-type interfaces (J201-J20n), at least one group of third-type interfaces (J30n), one group of fifth-type interfaces (J500), and one group of sixth-type interfaces (J600), the processing control module being communicatively connected with a plurality of sensors via the at least one group of first-type interfaces (J101-J10n) and the at least one group of second-type interfaces (J201-J20n), each of the sensors being respectively communicatively connected with the first-type interface (J101-J10n) and the second-type interface (J201-J20n), the processing control module being communicatively connected with an external control device via the fifth-type interfaces (J500), and being communicatively connected with an external service terminal via the sixth-type interfaces (J600), wherein: the fifth-type interfaces (J500) are configured to send control messages, data messages, and report feedback information; and the fifth-type interfaces (J500) and the at least one group of first-type interfaces (J101-J10n) are configured to cooperate with the instruction processing unit to configure and query parameters of the sensors , and to upgrade firm ware and report feedback information of the sensors and the processing control module ; the at least one group of second-type interfaces (J201-J20n) and the sixth-type interfaces (J600) are configured to cooperate with the data processing unit to acquire data of the plurality of sensors , and to transmit the data to the external service terminal for processing, wherein the processing control module comprises a first controller configured for parameter configuration and firmware upgrade, and a second controller configured for data interaction of the plurality of sensors , the first controller comprising the instruction processing unit, a group of fifth-type interfaces (J500), and at least one group of first-type interfaces (J101-J10n), the second controller comprising the one group of sixth-type interfaces (J600), and at least one group of second-type interfaces (J201-J20n), the third-type interfaces (J30n) being provided on the first controller or on the second controller . the fifth-type interfaces (J500) are configured to send control messages, data messages, and report feedback information; and the fifth-type interfaces (J500) and the at least one group of first-type interfaces (J101-J10n) are configured to cooperate with the instruction processing unit to configure and query parameters of the sensors , and to upgrade firm ware and report feedback information of the sensors and the processing control module ; the at least one group of second-type interfaces (J201-J20n) and the sixth-type interfaces (J600) are configured to cooperate with the data processing unit to acquire data of the plurality of sensors , and to transmit the data to the external service terminal for processing, wherein the processing control module comprises a first controller configured for parameter configuration and firmware upgrade, and a second controller configured for data interaction of the plurality of sensors , the first controller comprising the instruction processing unit, a group of fifth-type interfaces (J500), and at least one group of first-type interfaces (J101-J10n), the second controller comprising the one group of sixth-type interfaces (J600), and at least one group of second-type interfaces (J201-J20n), the third-type interfaces (J30n) being provided on the first controller or on the second controller . <EOS>