[1] The type collection was made in Panzhihua City, China (Sichuan Province), where it was found growing in the ground near pine trees.

[1] The fruit bodies are pale yellowish-brown to brown, roughly spherical, and measure 1.5–3 cm (0.6–1.2 in) in diameter.

The peridium (outer skin) is 200–300 μm thick and comprises two distinct layers of tissue.

[1] The internal spore-bearing tissue of the truffle, the gleba, is yellow-brown to reddish-brown in mature specimens.

[1] Tuber sinoexcavatum closely resembles the common European truffle T. excavatum, but mature fruit bodies of the latter species usually have a dark colored gleba.