The invention discloses an LED module light source which comprises a lens arranged on a substrate. The lens comprises a filling cavity, a closed space is formed by the filling cavity and the substrate and filled with a first filling agent, and the first filling agent is a colorless and transparent non-solid substance free of electric conductivity. The lens further comprises multiple energy absorption cavities filled with a second filling agent which is colorless and transparent gas. LED chips and bonding wires are located in the closed space. By the adoption of the LED module light source, the problem that bonding wires are likely to be damaged by external impact force and internal stress of a packaging rubber body so as to be broken due to the low mechanical strength can be solved effectively, and the LED module light source is long in service life and high in reliability.