The city is the typical artificial landscape system with the characteristics of high fragmentation and low connectivity. Based on the connectivity theory of landscape ecological network, this article discusses the influence, connotation and the characteristics of landscape ecological connectivity and the connection to eco-city construction of China, analyses the typical graphical model of urban landscape ecological network, choosing γ=L/3(V-2),α=L-V+1/2V-5,β=2L/V (in the formula of γ, α and β, L is the number of factual line between knots, V is the number of knots), density of corridor d=L/A and indicator C= L/ξ nA (in formula of indicator d and C, L is the total length of corridor (km), A is area (km2), n is the number of knots, ξ is coefficient) as evaluation indicators and system and tries to evaluate the connectivity of Shanghai urban landscape ecological network in the road network, the green space network, the river system network and the road-river-green space compound network. The characteristics of river network are γ=0.65, α=0.45, β=3.85 and C =1.93. The characteristics of road network are γ=0.7,α=0.54,β=4.16 and C =2.08. The characteristics of green space network are γ=0.49,α=0.34,β=2.88 and C =1.44. The characteristics of road-river-green space compound network are γ=0.44,α=0.16,β=2.63 and C=4.13. Calculation analysis aims at providing a foundation for eco-city development construction and the urban landscape ecological network planning. Results show that, with different connectivity characters individually for each network, all the networks have higher connectivity, but the connectivity degrades sharply to the path-river-green space compound network. The indicators γ,α and β of road network degrade by 37%, 70% and 35% individually, and the indicatorsγ,α and β of river network degrade by 32%, 64% and 138% individually. All this shows fragmentation, isolation and low connection of Shanghai urban landscape eco-network. Finally, the paper gives some suggestions to dealing with the problems of promoting the circle connectivity, increasing the number and scale of network knots, and constructing the eco-bridge between three networks at each knot in order to promote connectivity of the total eco-network.