Method for improving business data transmission quality and business data transmission device

The invention discloses a method for improving the business data transmission quality and a business data transmission device, which relate to the field of communication and can take the positive remedial measures of the business data transmission under the condition that the network links are crowded. The method is implemented by: determining the load flow on each link from a source node to a destination node; comparing the load flow on each link with a risk threshold corresponding to the business data loaded on the link; when determining that the load flow on the link reaches the risk threshold, selecting a reserved link for the current link; and switching the transmission of the business data loaded on the link to the reserved link, thereby achieving the effect of taking the positive remedial measures of the business data transmission under the condition that the network links are crowded. The method selects the link with maximum remaining resources as the reserved link, according to the load flow and the bandwidth of each link, and can keep clear of the crowded network link, thereby improving the quality of business data transmission.