An indirect measurement method for natural ground feature laser reflection characteristics is proposed based on bidirectional reflection ratio coefficient theory. A laser detector at different angles is used to collect the response amplitude data of 1.06 μm laser to the chosen natural ground feature and diffuse reflection board at the same position. The ratio value is calculated to obtain the bidirectional reflection ratio coefficient of the ground feature at different angles and the reflection characteristics of different ground feature to laser is reflected indirectly. And the method can be used to test the bidirectional reflection ratios of weed, red soil and weathering rock. The engineering application feasibility of the method is verified by experiments.