The relation between concepts and their properties in semantic memory was investigated in terms of the salience of their properties through priming effects in lexical decision task. In Experiment I, subjects were 16 university students, and the words on fierceness (meek/fierce) were presented as prime, followed by target composed of 3 meek and 3 fierce animal names and 6 nonwords. In Experiment II, for all 16 subjects, the words on speed (slow/fast) were used as prime, and 4 slow and 4 fast animal names and 8 nonwords as target. The priming effects occurred only in Experiment I, i.e., only when the primes were the information of the salient property of instances in animal category. Such priming effects were also observed in Inoue's previous Experiment where the other salient property, the size of animals, was used as prime (Inoue, 1985a). These results suggested that the strength of the direct relatedness between concepts and their properties depended firstly on the salience of the properties in each concept and secondly, it reflected the values of the properties.