Upon its release, the track garnered generally favorable reviews from music critics, who highlighted the song as one of Amuro's best singles, and commended the production and her vocals.

The single has been certified within three different categories by the Recording Industry Association of Japan (RIAJ): triple platinum for digital sales, million in chaku-uta (ringtone) and gold in physical shipments.

On December 28, 2006, Japanese magazine CD Journal confirmed the release of a new single, entitled "Baby Don't Cry.

It was also released worldwide on February 21, 2007, through Avex Inc.[4] The CD single contains both "Baby Don't Cry" and "Nobody," plus shortened versions of the tracks.

[4] Japanese music editor Random J compared the composition to the works of American recording artist, Janet Jackson.

[7] CD Journal staff member's felt the song's composition was "simplistic," and described the lyrical content as "painful.

Staff members from Amazon were positive in their review, labeling the song and Amuro's vocal delivery as "impressive."

[8] AllMusic's editor Adam Greenberg commended the song's departure from the album's electronic music, saying "'Baby Don't Cry' finally gives a peek at Amuro's vocals with less electronic additions...."[9] AllMusic staff selected the single as one of Amuro's best songs in her discography.

"[13] With this release, Amuro accomplished 13 consecutive years in the top 10 of the Oricon Singles Chart, a record that had stood since her solo debut single “Taiyou no Season” (1995), thus surpassing the record of 12 consecutive years held by Kyoko Koizumi and Shizuka Kudo.

[12] The CD single for "Baby Don't Cry" was certified gold by the Recording Industry Association of Japan (RIAJ) for shipments of 100,000 units.

[26] The single has been performed on several concert tours conducted by Amuro, and has appeared on Japanese commercials and television series.

"Baby Don't Cry" made its debut live performance on her Play Tour 2007, which was in support of the album with the same title.

[31] In celebration of Amuro's 20th music career anniversary, the single was included on her 5 Major Dome concert tour in Japan; the song was performed as an encore track.

[32] The song also made an appearance at her Live Style concert tour (2014), where it was included on as the last track from the setlist.