What I've found nowhere is an analysis of Ji-Huan He's actual work. Is it entirely worthless or has he done something useful? How about his most cited article (bottom of this link), for instance?
I'll answer briefly here, or point to where the answers are given.
I would break his work into two categories.
First category: Homotopy Perturbation Method (HPM) and other differential equation stuff.
He JH, "New interpretation of homotopy perturbation method," International Journal Of Modern Physics B 20(18): 2561-68, 2006.
He JH, "Some asymptotic methods for strongly nonlinear equations," International Journal Of Modern Physics B 20(10): 1141-99, 2006
He JH, “Variational iteration method—a kind on non-linear analytical technique: some examples,” Int. J. Non-Linear Mech. 34(4): 699-708, July 1999.
Xu-Hong (Benn) Wu and Ji-Huan He, Solitary solutions, periodic solutions and compacton-like solutions using the Exp-function method, Computers and Mathematics with Applications, Vol. 54, No. 7-8, pp. 966-986 (2007)
Second category: E-infinity theory and allometry.
Ji-Huan He, Zhong-Fu Ren, Jie Fan, Lan Xu. Hierarchy of wool fibers and its interpretation using E-infinity theory. Chaos, Solitons & Fractals, 41 (2009)1839 –1841
Fatalness of virus depends upon its cell fractal geometry (PDF)
Application of E-infinity theory to biology (PDF)
His work in category 1 has been described by Francisco M. Fernández as "useless", "wrong", "nonsensical", "worthless" and "the worst research papers ever written". Others have said the work isn't even original. It's like the joke with the two old ladies in the restaurant. One says "the food here is very bad" and the other says "yes, and the portions are too small". See this for both types of criticism.
His work in category 2 is much worse. When one thing is, or is approximated by, or is presumed to be, a constant times a power of another thing, Ji-Huan He insists on using the fancy word allometry in that regard. Then he jumps to paradigm-shifting conclusions you'd think are jokes if you didn't know better. These are invariably published in interdisciplinary journals because no specialist journal would accept such nonsense. They always cite El Naschie extravagantly.
Like El Naschie, Ji-Huan He began as a structural engineer. This is an example of Boyer's Law, which notes that engineers are overrepresented in the crackpot community.