The present disclosure relates to a data transmission method for robot, including: transmitting an attribute reporting request to at least one node via an attribute request frame, receiving an attribute reporting response transmitted from the node, updating the length of a buffer according to the attribute reporting response when a length of at least one attribute to be reported being determined to be greater than the length of the buffer. The attribute reporting response carries the length of the attribute data, and receiving the attribute data reported from the node via at least one block data, when the length of the attribute to be reported being determined to be less than or equals to the length of the buffer.