Abstract: Abstract：The complex exploration environment of coal seismic exploration and the influence of surrounding interference factors lead to the limitation of the use of seismic sources, which restricts the accuracy of data acquisition in coal exploration . Taking typical explosive source, vibroseis source and electric spark source as examples, this paper analyzes the source excitation and applicable conditions, carries out the test of excitation well depth and vibration superposition times, optimizes the source parameters, and compares and analyzes the test results through application examples. The results show that explosive source have less response to shallow formation information and higher sensitivity to deep formation;Vibroseis source has better exploration effect for both shallow and deep strata, with good comprehensive effect, but sometimes it is affected by the scattering of shallow low velocity layer; Electric spark source has less response to shallow formation information and higher sensitivity to deeper formation. However, limited by its excitation energy, the effect of deep formation exploration is relatively poor.