An object of the present invention is to provide a VEGFR2 inhibitory peptide that has high specificity and can be produced at low cost. The present invention provides a peptide comprising the following amino acid sequence. Xaa1-Xaa2-Xaa3-Xaa4-Xaa5-Xaa6-Xaa7-Xaa8-Xaa9-Xaa10-Xaa11-Xaa12-Xaa13-Xaa14-Xaa15 (where Xaa2 is Val or its derivative, Xaa6 is Asp or its derivative, Xaa7 is Pro Xaa8 represents Trp or a derivative thereof, Xaa10 represents Asn or a derivative thereof, Xaa11 represents Gly or a derivative thereof, Xaa12 represents Leu or a derivative thereof, and Xaa1, Xaa3 to Xaa5, Xaa9, and Xaa13 to Xaa15 each independently Represents any amino acid or derivative thereof. Xaa16-Xaa17-Xaa18-Xaa19-Xaa20-Xaa21-Xaa22-Xaa23-Xaa24-Xaa25-Xaa26-Xaa27-Xaa28-Xaa29-Xaa30 [where Xaa24 is His or a derivative thereof, Xaa25 is Pro or a derivative thereof Xaa16 to Xaa23 and Xaa26 to Xaa30 represent any amino acid. ].本発明は、特異性が高く、安価に製造することが可能なVEGFR2阻害ペプチドを提供することを目的とする。本発明は、以下のアミノ酸配列を含むペプチドを提供する。 Xaa1-Xaa2-Xaa3-Xaa4-Xaa5-Xaa6-Xaa7-Xaa8-Xaa9-Xaa10-Xaa11-Xaa12-Xaa13-Xaa14-Xaa15 〔式中、Xaa2はVal又はその誘導体、Xaa6はAsp又はその誘導体、Xaa7はPro又はその誘導体、Xaa8はTrp又はその誘導体、Xaa10はAsn又はその誘導体、Xaa11はGly又はその誘導体、Xaa12はLeu又はその誘導体を表し、Xaa1、Xaa3～Xaa5、Xaa9、及びXaa13～Xaa15は、それぞれ独立に任意のアミノ酸又はその誘導体を表す。〕；又は Xaa16-Xaa17-Xaa18-Xaa19-Xaa20-Xaa21-Xaa22-Xaa23-Xaa24-Xaa25-Xaa26-Xaa27-Xaa28-Xaa29-Xaa30 〔式中、Xaa24はHis又はその誘導体、Xaa25はPro又はその誘導体を表し、Xaa16～Xaa23及びXaa26～Xaa30は任意のアミノ酸を表す。〕。
