The invention discloses a wireless sensor network node deployment method based on energy nodes. The method mainly comprises the following steps: 1) collecting building environment system parameters; 2) establishing a building indoor energy flow model by using a CFD method; 3) performing feature parameter extraction on the parameters of the building indoor energy flow model by using a PCA algorithmand a KPCA algorithm to obtain a plurality of feature parameters; 4) clustering the spatial domain discrete grids corresponding to the characteristic parameters by using a K-means algorithm so as toform energy nodes; and 5) selecting a primary fusion point, a secondary fusion point and a stable point from the energy nodes, and respectively arranging sensors at the positions of the selected primary fusion point, the selected secondary fusion point and the selected stable point. CFD, KPCA and PCA feature extraction algorithms, a K-means clustering algorithm and other methods are combined to carry out deployment method optimization, the reliable node selection arrangement method is further formulated, the method can be repeatedly and flexibly applied to multiple regions, and the method haspractical meaning and practical values for the industrial building environment of multiple monitoring regions.