diff --git a/gitea/issue_reaction.go b/gitea/issue_reaction.go
new file mode 100644
index 0000000..b13b0e3
--- /dev/null
+++ b/gitea/issue_reaction.go
@@ -0,0 +1,80 @@
+// Copyright 2020 The Gitea Authors. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package gitea
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"time"
+)
+
+// Reaction contain one reaction
+type Reaction struct {
+	User     *User     `json:"user"`
+	Reaction string    `json:"content"`
+	Created  time.Time `json:"created_at"`
+}
+
+// GetIssueReactions get a list reactions of an issue
+func (c *Client) GetIssueReactions(owner, repo string, index int64) ([]*Reaction, error) {
+	reactions := make([]*Reaction, 0, 10)
+	return reactions, c.getParsedResponse("GET", fmt.Sprintf("/repos/%s/%s/issues/%d/reactions", owner, repo, index), nil, nil, &reactions)
+}
+
+// GetIssueCommentReactions get a list of reactions from a comment of an issue
+func (c *Client) GetIssueCommentReactions(owner, repo string, commentID int64) ([]*Reaction, error) {
+	reactions := make([]*Reaction, 0, 10)
+	return reactions, c.getParsedResponse("GET", fmt.Sprintf("/repos/%s/%s/issues/comments/%d/reactions", owner, repo, commentID), nil, nil, &reactions)
+}
+
+// editReactionOption contain the reaction type
+type editReactionOption struct {
+	Reaction string `json:"content"`
+}
+
+// PostIssueReaction add a reaction to an issue
+func (c *Client) PostIssueReaction(owner, repo string, index int64, reaction string) (*Reaction, error) {
+	reactionResponse := new(Reaction)
+	body, err := json.Marshal(&editReactionOption{Reaction: reaction})
+	if err != nil {
+		return nil, err
+	}
+	return reactionResponse, c.getParsedResponse("POST", fmt.Sprintf("/repos/%s/%s/issues/%d/reactions", owner, repo, index),
+		jsonHeader, bytes.NewReader(body), reactionResponse)
+}
+
+// DeleteIssueReaction remove a reaction from an issue
+func (c *Client) DeleteIssueReaction(owner, repo string, index int64, reaction string) error {
+	body, err := json.Marshal(&editReactionOption{Reaction: reaction})
+	if err != nil {
+		return err
+	}
+	_, err = c.getResponse("DELETE", fmt.Sprintf("/repos/%s/%s/issues/%d/reactions", owner, repo, index), jsonHeader, bytes.NewReader(body))
+	return err
+}
+
+// PostIssueCommentReaction add a reaction to a comment of an issue
+func (c *Client) PostIssueCommentReaction(owner, repo string, commentID int64, reaction string) (*Reaction, error) {
+	reactionResponse := new(Reaction)
+	body, err := json.Marshal(&editReactionOption{Reaction: reaction})
+	if err != nil {
+		return nil, err
+	}
+	return reactionResponse, c.getParsedResponse("POST", fmt.Sprintf("/repos/%s/%s/issues/comments/%d/reactions", owner, repo, commentID),
+		jsonHeader, bytes.NewReader(body), reactionResponse)
+}
+
+// DeleteIssueCommentReaction remove a reaction from a comment of an issue
+func (c *Client) DeleteIssueCommentReaction(owner, repo string, commentID int64, reaction string) error {
+	// swagger:operation DELETE /repos/{owner}/{repo}/issues/comments/{id}/reactions issue issueDeleteCommentReaction
+	body, err := json.Marshal(&editReactionOption{Reaction: reaction})
+	if err != nil {
+		return err
+	}
+	_, err = c.getResponse("DELETE", fmt.Sprintf("/repos/%s/%s/issues/comments/%d/reactions", owner, repo, commentID),
+		jsonHeader, bytes.NewReader(body))
+	return err
+}