A component feeding device includes a main body (11), first engaging means (30) fixed on a lower surface of a front portion of the main body, and a second engaging means (50) fixed on a lower surface of a rear portion of the main body. On a components feeding table (7), first retaining means (40) and second retaining means (60) which respectively engage with the first engaging means and the second engaging means are formed. The first engaging means engages with the first retaining means at a position below an upper surface (41d) of a holding portion (41) of the first retaining means. The second retaining means includes: an oscillation member (61) capable of oscillating back and forth at a position where engaging with the second engaging means; a turning shaft (67) for axially supporting the oscillation member; a supporting member (64) for supporting the turning shaft, which is fixed on the components feeding table; and energizing means (65) for energizing the oscillation member toward one of two positions, i.e., one position where the oscillation member receives a fixed shaft (53) of the second engaging means, and the other position where the fixed shaft retains the fixed shaft. <IMAGE>