The invention discloses a testing device for detecting the closure and peak regulating effects of a
green roof. The testing device comprises a testing
bed face and a support. The testing
bed face comprises a
bed face frame. The bed face frame is divided by a water stopping plate into a left side and a right side, a water draining groove is formed in one side, and a water draining plate is laid on the other side; a filtering layer, a soil layer and a
plant layer are sequentially arranged on the water draining plate, a plurality of water draining holes are formed in the water stopping plate and used for leading water into the water draining groove, a top cover is arranged at the upper portion of the water draining groove, a water outlet is formed in the water draining groove, drained water is led into a water collecting container through a water draining
pipe, and the water draining plate also leads drained water into the water collecting container; the testing device also comprises a comprehensive detection analysis
system. The testing device can be used for simulating the closure effect under the condition that an actual roof is transformed into a
green roof, quantitative analysis is carried out, the influence of other factors on the testing result is eliminated, and the basis is provided for formulating a
sponge-
city development scheme. The testing device is low in cost, convenient to assemble and disassemble, high in
operability and wide in application range.