In the context of satellite terrestrial radio frequency/laser wavelength sharing, this paper studies the aggregate interference of International Mobile Telecommunication System (IMT) terrestrial stations that is imposed to the low earth orbit (LEO) satellites equipped with the multi-beam receiving antenna for radio communication with frequencies below 6 GHz and free-space laser communications. For frequencies below 6 GHz, typical kinds of IMT base station deployment scenarios were emulated according to the latest International Telecommunication Union (ITU) Recommendations. By means of Monte Carlo simulation, a statistical clutter loss model was introduced into the interference simulation. The model's applicability was analyzed, and it was used for the random detailed scene simulation. After combining the typical scenarios with the characteristics of the satellite multi-beam antennas, we study the change trends of the different typical base station deployment scenarios with the different satellite antenna beam scanning angels by simulations. The results show that when the height of base station antenna was below rooftop, the clutter loss should not be neglected. On the other hand, we analyze the possible interference of the terrestrial free-space optical communication imposed to the LEO satellite by link calculation. The analysis results have theoretical guiding significance and application value for monitoring the receiving environment of LEO satellites.