Abstract: In order to analyze the wave field characteristics of seismic-while-mining data excited by coal cutter as seismic source, forward simulation was used to calculate seismic data. We transform the cutting mode of spiral drum and the stress of drum into the force function of seismic source, which is added to the wave equation in the form of load distribution at different time and location. Wave equation is solved by high-order staggered-style finite difference method. Finally, the seismic data obtained by numerical simulation show that shear wave energy is very strong and press wave energy is very weak in the wave field excited by spiral drum. There are obvious in-seam waves-in y component with high frequency, and its polarization characteristics show that in-seam wave is mainly of Love-type. Finally, the comparison between the simulated data and the actual y-component data shows that they have high similarity in wave field composition and distribution.