This proposal is the continuation of the proposal "Mass-loss and evolution of AGB stars in the LMC. A mini-survey", (PROP-ID : AGB-LMC, OBS-ID : CLOUP). It has been submitted and accepted at the OTAC meeting helded in September. The observations required in the first proposal are now achieved. We have surveyed about half a square degree in the Bar of the LMC in the LW1 (4-5 microns) and LW10 (12 microns) bands, divided in 7 (9x9) rasters. One of the raster, LMC5 (16'x16') has been fully analysed, and completed by ground-based DENIS observations in the I, J, and K-short bands. This first analysis shows that we reach the goals of the proposal. We easily discover with ISO the AGB stars with significant mass-loss rates. There are 15 in the LMC5 field, with luminosities ranging from 4,000 to 19,000 Lo. Only 7 of them were detected by IRAS. AGB stars with fainter or no mass-loss are easily detected with DENIS, so that we actually get the whole AGB population in the field, as well as its luminosity distribution. This is unique, as optical and NIR surveys miss optically thick objects, while IRAS was very incomplete close to its detection limit. Here we propose, as a first priority, to extend this survey in the Small Magellanic Cloud, again in regions of high stellar density for our statistic purpose. The goal is to compare both Magellanic Clouds, in particular the effects of the metallicity. As a second priority we propose to extend a little the survey in the LMC.