Abstract: For problems of inaccurate shearer position and attitude adjustment, a shearer position and attitude adjustment method based on strapdown inertial navigation system was researched on the ground with slowly varied angle. Firstly, shearer position technology was introduced, namely strapdown inertial navigation system obtained motion parameters of shearer for further processing by Euler angle method, so as to complete attitude solution and real-time position of shearer. Then, an attitude adjustment method based on strapdown inertial navigation system was introduced by taking cutting height adjustment of shearer as an example, and relation between cutting height and body dip angle of shearer was derived under different shearer cutting conditions. Finally, shearer position and cutting height adjustment experiments were carried out by use of a shearer model. The experimental results show that the shearer position and attitude adjustment method based on strapdown inertial navigation system can effectively improve position and attitude adjustment accuracy of shearer.