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We study the existence of positive solutions for the following nonlinear m-point boundary valueproblem for an increasing homeomorphism and homomorphism with sign changing nonlinearity:{(ϕ(u′(t)))′+a(t)f(t,u(t))=0,    0<t<1,    u′(0)=∑i=1m−2aiu′(ξi), u(1)=∑i=1kbiu(ξi)−∑i=k+1sbiu(ξi)−∑i=s+1m−2biu′(ξi),  where ϕ:R→R is an increasing homeomorphism and homomorphism and ϕ(0)=0. The nonlinear term f maychange sign. As an application, an example to demonstrate our results is given. The conclusions in this paper essentially extend and improve the known results

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