Finite-element models of the thermal/stress field for three different scanning patterns, i.e. contour offsetting, long raster and short raster patterns, during laser solid forming (LSF) processes for T-shaped chord of Ti-6Al-4V alloy are developed respectively. It is shown that the component along the vertical direction GYmax of the maximum temperature gradients in the melting pool is much bigger than its component along the scanning direction GXmax. Both GYmax and GXmax decrease in first few layers and then become almost constant with the increase of cladding height. Finally GYmax is about three times as great as GXmax. The instantaneous maximum temperature gradient GTmax for short raster pattern always presents a fluctuation with a small amplitude range and which is smaller than those for other patterns as a whole. The increasing velocity of stress for long raster pattern is somewhat larger than that for contour offsetting, the increasing velocity of stress for short raster pattern is the smallest. When the deposition of the T-shape chords are finished, there exists a residual stress concentration at the back of conjunction of horizontal and vertical parts of the T-shape chord for contour offsetting pattern, at the two ends of the chord for long raster pattern. And the residual stress distribution in T-shape chord formed by short raster pattern is uniform. The residual stresses in different directions on the substrate for these three scanning patterns show the same distribution regularity, but the residual stress of short raster is smaller than others.